Quantcast
Channel: Tecsun – The SWLing Post
Viewing all 182 articles
Browse latest View live

Review: Eton/Grundig Executive vs. Tecsun PL-880

$
0
0

Many thanks to SWLing Post contributor, Chuck Rippel (K8HU) for the following guest post:


A Tale of Two Radios: Tecsun PL-880 vs Eton/Grundig Executive Satellit

By Chuck Rippel, K8HU

This proved to be a difficult comparison strictly when writing from the perspective of “which one is better.”

In my view, the two models compliment each other and both are worthy additions for any DX’er or listener. Each has its own set of useable and unique features. That said, 1970 is when I got my start in SWBC DX, either of these radios would have been among “the gold standards” at a time when Realistic DX-150s were $119.95 new, Hammarlund HQ-180s could be purchased new and Collins was still putting “winged emblems” on their amateur equipment.

There were few consumer grade receivers which had frequency accuracy until the introduction of the Allied SX-190 at the princely sum of $249 but when tuning the 49MB in the evening, one heard the entire band on one frequency due to overloading. Oh well, I digress….

The Executive Satellit will be the 3rd from the Eton Satellit family I purchased. The first two were initial releases of the standard, black version; and both suffered from build quality issues and had to be returned. Some months down the road, I noticed that my friend, Clint Gouveia on his “Oxford Shortwave,” YouTube channel was demonstrating great success with his own Eton Satellit and with that in mind, I made what would become the 3rd plunge with Clint’s appreciated encouragement.

My first operational impression of the Executive Satellit was that the overall build quality had been improved by an order of magnitude. The radio looks and feels good, responding well to control inputs although their placement on the PL-880 is superior to my way of thinking. On the Executive, I quickly found a feature different from the original Eton Satellit, the adjustable display backlight can be set to stay on indefinitely, even with the radio turned off and when the clamshell style leather case held in place by a number of magnets is folded over the front of the radio, the display is out of view and if left backlit, will result in a set of dead batteries over time.

While on the subject of the Eton’s display, it is a major selling feature. The yellow-orange characters convey all the information a user might need with excellent resolution and the display is overall, pleasant to look at. A welcome change from LCD type displays more commonly found in portables today including the Tecsun PL-880.

The Satellit uses 4 AA batteries (I recommend rechargeable, 2000ma Panasonic Eneloop batteries) while the Tecsun uses an included, single 16550 2000ma lithium ion battery. Both radios share the capability of being able to charge their internal batteries when connected to an included DC wall-wort power sources and additionally, in the case of the Tecsun, from a USB source. The Satellit uniquely allows the user to enter a charging time in minutes via the front panel keypad and the owners manual suggests charging times for batteries of various capacities. A nice feature.

Each manufacturer stresses memory capacity as a selling point. Is a radio sporting 3,000+ memories better than a model with “only” 700? I suggest such a feature is a viable selling point only if the user can remember what is stored in each memory location. Both models help the user organize memory usage by organizing them in “pages” or banks.

As an aside, I organize memory pages using a couple for local MW stations, and one for local FM. Pages 1-24 contain SWBC stations organized by time. Bank or page 1 contains SWBC stations that can be heard at 0100Z, page 2 at 0200Z and so on. A plus for the Eton, the user has the option of assigning an 8 character label to each page of seven memory channels which are accessible via a row of “F” keys, located just under the display.

What about reception; what’s “under the hood?” Both have variable bandwidth, SSB, an external antenna input and fine tuning options. Using only the stock, attached whip antenna I was able to pick up Radio Havana, Cuba on 15370.0 although the PL880 suffered from picking up its own electronic spurs, seemingly a Tecsun characteristic noted across several of their models. Both radios received the station adequately but I’ll give a slight edge to the Satellit due to its slightly better audio recovery. Uniquely, the Satellit offers sideband selectable, synchronous detection but the resulting audio is on the muddy side and that feature is less than stellar. On FM, both were able to provide stereo reception of a 250 watt translator on 96.5 mHz located approximately 10 miles away with excellent, nearly identical audio quality. In as much as audio quality is judged differently by each of us, I will refrain from favoriting one radio over another.

The ability to receive, decode and display RDS data is a plus for the Satellit. An aside, there is a well known MW-DX’pert who also chases FM DX. What does he use for a radio and antenna? How about a Sony 2010 and Tecsun PL-310? He puts each radio on an open frequency and waits for E-skip. No special, hi tech FM tuner or multi-element FM antennas. Point being, either of these radios have high performance FM tuners and are capable of delivering FM DX when there is E-Skip or Tropo-Ducting which speaks highly for both.

As an Ultra-light DX’er since its inception, MW reception is important. Here again, performance between the two is was nearly identical although with their small ferrite internal MW antennas, don’t compete with say… a GE Super Radio II. Both the Eton and Tecsun benefit from an external, tuned, close- coupled MW antenna such as a Crate Loop. Unfortunately, the external antenna input on both is not operable on MW.

Video: Comparison of Satellit and PL-880

Click here to view on YouTube.

Clearly, there is no “best” here, either choice is a good one; having both is perhaps the best option. The performance of the Satellit and PL880 excel well beyond their price and make convenient traveling companions. A third of the size and half the price of what many consider “THE” benchmark portable multiband receiver, the Sony ICF-2010 or in Europe, the ICF-2001, both the Pl-880 and Satellit offer increased portability and compete closely with the Sony on performance and features.

Video: How to use Satellit synchronous detector

Click here to view on YouTube.

These attributes combine to deliver a sometimes rare commodity: VALUE ! I would challenge anyone to identify a current manufacturer, consumer grade receiver that offers the performance, features and audio quality of either these two receivers for under $250. All kudos aside, neither of these fine receivers will deliver the kind of gold plated performance delivered by a WinRadio, Drake R8B or Perseus, etc.


Many thanks, Charles, for sharing your thoughts on these fine portables! 

FYI: I just checked and the Eton Executive Satellit is still $156.92 shipped via Amazon.  

The Tecsun PL-880 is $159.95 (plus shipping) via Universal Radio, $159.99 via Anon-Co on eBay and $169.98 via Amazon


The Tecsun PL-880: triple conversion architecture

$
0
0

Many thanks to SWLing Post contributor, Larry Thompson, who writes:

There’s been some confusion on my part whether the Tecsun PL-880 is a dual conversion or triple conversion receiver. Amazon and eBay list the receiver as double conversion, whereas Universal Radio doesn’t mention either.

After scouring the Instruction Manual, I was pleased to learn that the PL-880 uses the Silicon Labs si4735 DSP microchip and has 4 Intermediate Frequencies.

1st IF: 55.845 MHz
2nd IF: 10.7 MHz
3rd IF: 45 kHz
4th IF: 128 kHz (exclusively for FM)

To me, that looks like a triple conversion architecture. The combination of the DSP microchip, and the triple conversion would explain why my Tecsun PL-880 is so much more sensitive and selective than my Sony ICF-SW8600GR.

My CountyCom GP-5/SSB emergency portable also has the same Silicon Labs DSP chip and it is almost as sensitive as the Tecsun PL-880, far more sensitive than the Sony. I’ve owned a Japan Radio JRC-525 and a Yaesu FT-900AT transceiver for many years, and the PL-880 digs out weak signals better than both those tabletop receivers, both dual conversion.

To quell the speculation, yesterday I contacted Anna at Anon-Co, the worldwide distributor for Tecsun radios. Her quick reply confirms my suspicions that the Tecsun PL-880 is indeed a triple conversion receiver. That would explain why it blows my Sony ICF-SW7600GR out of the water in senitivity and its ability to pull out weak stations.

Among all the other great attributes, this is an welcome discovery and one never mentioned in the specs by the various retailers of this receiver!

Thank you Larry, for shedding light on this–Anna would certainly know.

Your note makes me realize that I really should order a second, current production model PL-880. My PL-880 is from one of the first batches produced. I imagine I could benefit from some of the firmware tweaks that have been made to this receiver over time.  Perhaps it would even be a good time to compare the 1st generation with the current generation?

I just checked and Anon-Co is selling the PL-880 on eBay for $153.99 US shipped.

Have any SWing Post readers compared early and late model PL-880 units? Please comment.

Video: Daytime mediumwave shootout with the Tecsun S-8800

$
0
0

The Tecsun S-8800

About a week ago, I received a re-engineered version of the Tecsun S-8800 from Anna at the excellent online retailer, Anon-Co.

If you recall, I evaluated an early production unit of the S-8800 in February and while putting it through the paces, I discovered loud, warbling DSP birdies throughout the mediumwave and shortwave bands. Tecsun, to their credit, pulled the S-8800 from production to address the issue.

My schedule last week made it impossible to carve out the dedicated time I needed to begin an S-8800 evaluation.

Yesterday, however, I spent the afternoon with my family at Richland Balsam, the highest point on the Blue Ridge Parkway (6,000′ ASL) and a completely RFI-free zone. I brought the Tecsun S-8800 and a few other portables along for the ride–namely the Digitech AR-1780, the C.Crane CC Skywave and the Panasonic RF-2200.

I had just enough available space on my smart phone to record this one short video:

Click here to view on YouTube.

Let’s be clear: comparing any modern radio with the RF-2200 on mediumwave is hardly fair.

For one, the RF-2200 has been out of production for a few decades.

Secondly (what I never finished saying in the video is that) the RF-2200 has a large rotatable ferrite bar antenna that provides excellent gain. The RF-2200 simply wipes the floor with all of my modern portables as their ferrite bar antennas are a fraction of the size.

In other words, the RF-2200 was engineered to rule mediumwave like a boss.

On shortwave, the RF-2200 does a fine job, but isn’t nearly as accurate and stable as modern DSP receivers.

Spoiler alert

Still, as the video indicates, my final review of the Tecsun S-8800 will indicate that it is not a receiver for the serious Mediumwave DXer. It’s been my experience that few shortwave portables are excellent on both HF and MW.

At home, tuned to local station 880 AM.

Of course you can’t tell from the video, but the S-8800 actually sounds brilliant when tuned to a relatively strong/local AM station, but either a lack of sensitivity or internal noise makes MW DXing a challenge.

I spent the better part of two hours yesterday evaluating its daytime MW performance–the video is pretty indicative of my findings. The S-8800 struggles with weak stations, but does a fine job with strong ones. It’s overall audio fidelity almost matches that of the RF-2200 when tuned to a strong broadcast. I’ve yet to test evening MW

The S-8800 still has some birdies on MW, but they’re not the loud warbling kind found on the previous model. Tecsun did properly address this, though in full disclosure, I haven’t fully explored the shortwave bands yet.

Shortwave?

I suspect the S-8800’s performance on shortwave will be much better than mediumwave because the previous S-8800 showed excellent results. As long as sensitivity wasn’t harmed while addressing the DSP birdies, I expect it’ll give the PL-880, PL-680 and Sony ICF-SW7600GR a run for their money.

Still…the lesson learned yesterday?

The Panasonic RF-2200 is the indisputable champion of mediumwave!

Video: Shortwave shootout with the Tecsun S-8800

$
0
0

After enjoying an afternoon testing the Tecsun S-8800 on the Blue Ridge Parkway this past weekend, I decided to return to the parkway yesterday and test the S-8800’s shortwave performance.

I carved out about two hours of my afternoon and spent the entire time comparing the S-8800 to the Tecsun PL-880 and the Sony ICF-SW7600GR. I tested the radios on several shortwave bands and in both AM and SSB modes.

On Sunday, we discovered that mediumwave performance is lacking on the S-8800. Not so on shortwave! Check out this short video:

Click here to view on YouTube.

In my comparisons, the Tecsun S-8800 has consistently outperformed the PL-880 and Sony ICF-SW7600GR on the shortwave bands. The AGC is pretty stable and sounds much like that of the PL-880 when QSB (fading) is present. Sensitivity is better than the PL-880, though, so the S-8800 can dig those signals out of the noise a little better.

Note, too, I had to pick up both the PL-880 and ‘7600GR  in my hand to obtain the best performance–that additional grounding gave each a slight boost. Quite common for portables. The S-8800 didn’t require this.

After I returned home yesterday, it struck me that perhaps a longer telescopic whip gave the S-8800 an advantage. Turns out, it’s only three inches longer than the PL-880’s whip.

Next, I need to spend a little time with the S-8800 mapping out any birdies on HF–a tedious process. I hope to start on that today.

To follow updates on this yet-to-be-released receiver, follow the tag: Tecsun S-8800.

Tecsun S-8800: Anon-Co publishes listing and price

A review of the Tecsun S-8800 shortwave/LW/AM-MW/FM portable receiver

$
0
0

Earlier this year, Tecsun released its long-awaited newest large portable: the Tecsun S-8800 portable shortwave/LW/AM-MW/FM receiver.

Though I fully intended to buy a Tecsun S-8800 for review, our friendly Hong Kong-based Tecsun retailer, Anon-Co, sent an S-8800 to me before I could. I’ve worked with Anna at Anon-Co for at least a decade and have purchased numerous radios for review, not to mention as gifts for family and friends.  When she insisted to send it as a gift, I decided I would (gratefully) accept the unit.

I received the S-8800 on February 1 and promptly posted unboxing photos here on the SWLing Post.

My new Tecsun S-8800 had a serious problem, though––one that two early S-8800e adopters noticed as well––internally generated noises, also known as birdies. And while most receivers will have a few minor birdies scattered across the bands, this S-8800 hosted a whole chorus of them, overwhelming the bands and making use of the radio difficult.  Read through this post thread for details.

I contacted Anna at Anon-Co and she immediately notified Tecsun; as a result, they halted distribution of the S-8800.

Tecsun took the S-8800 to their engineering team, and I’m happy to report they’ve now eliminated the horrible warbling DSP birdies of the initial unit I received.

On the S-8800s since released, while there are still a few minor birdies across the bands (more on that later), they’re merely what one might expect to find on any receiver. In short, the S-8800 now in production is a functional receiver, and a contender in its class.

I’ve had the S-8800 for a few weeks now and have had time to put it through its paces. What I present now is a review of the re-engineered Tecsun S-8800.

First impressions

Tecsun S-8800 Front Ang

In the spirit of full disclosure, I must note that I’m not as avid a user of large portables like the S-8800. Personally, my preference is for smaller, full-featured travel-friendly portables, or else larger tabletop models.  I travel often and like to pack lightly, so I rarely reach for anything bigger than my trusty Sony ICF-SW7600GR, or Tecsun PL-880, and more often than not, I grab the ultra-compact Sony ICF-SW100 or C. Crane CC Skywave.

But to say that I never reach for large portables would be inaccurate. In fact, I use a Grundig GS350DL daily; it’s my analog kitchen radio. I rarely move the tuning dial (a good thing, since it unfortunately drifts) because it’s locked onto my in-house SSTran AM transmitter on 1570 kHz.

What large format portables like the GS350DL and S-8800 can provide that a small portable cannot is broad, rich, room-filling audio. In my world, good audio is an important factor in overall signal intelligibility.

The S-8800 chassis resembles several other receivers: the Grundig GS350DL, S450DLX, and more recently, the Field BT, just to name a few.

The body is made of a hard plastic (not rubberized) and feels rugged enough. The knobs and buttons also feel tactile and of comparable quality to the previous similar models noted above.  With the rechargeable batteries inserted, it weighs about 3 pounds 4 ounces (1.5 KG).

The backlit display is large and viewable from almost any angle––even at a distance.

The main encoder (tuning knob) has appropriate amount of brake for most listeners. It wobbles very slightly, but functions amazingly well. I prefer it over its large portable predecessors, especially the 350GL. There is no soft mute while tuning, so band-scanning is a fluid, almost analog, process.

Both the “Band Select” and “AM BW” knobs have soft detents that mark steps in selection. In the field, I noticed that these can occasionally skip an increment when the detent only moves one position or the knob is turned very slowly. This doesn’t really affect functionality in any way, but I thought it worth noting nonetheless.

Like previous similar models, the S-8800 lacks a built-in keypad for direct frequency entry. That would be a major negative for a radio in this price class if the S-8800 didn’t come with one invaluable accessory:  an infrared remote control.

Infrared (IR) Remote Control

The Tecsun S-8800 ships with a IR remote control, and as far as I’m concerned, it’s great.

The remote feels durable, fits well in the hand, and the back has a place for it to balance on your index finger when holding…

But more importantly, the remote works quite well.  The controls are intuitive and the labeled buttons are quite easy to read. They’re also tactile and have a muted “click” response when pressed. Indeed, I wish my television’s remote was this well designed.

And the remote is quite useful, especially if you like listening from bed, from a porch, from the kitchen or dining room or den––or, in fact, from any space where you might wish to control the receiver at a distance. I believe its possible that every function of the S-8800 can be controlled with the remote––even the sleep timer!

Perhaps my dream remote for such a purpose would be backlit, but the S-8800’s remote is so simple to use, I’ve already nearly memorized where the buttons are located for nighttime use.

Operation Manual

The S-8800 ships with an informative operational manual, although this radio is intuitive enough that a seasoned radio listener will not need to reference it, save for advanced settings. Still, it’s written in clear language––with comparatively few English grammar errors––and the diagrams for both the radio and the remote are exceptional.

I referenced the manual several times to sort out ATS operation, saving/erasing memories, and to hunt down function shortcuts.

Features

The S-8800 is a feature-packed triple conversion receiver.  Here’s an abridged list of its features, focusing on those most radio enthusiasts seek:

  • Frequency coverage:
    • LW: 100 – 519 kHz (1 kHz & 9 kHz steps)
    • MW: 520 – 1710 kHz (1 kHz, 9 kHz and 10 kHz steps)
    • SW: 1711 – 29,999 kHz (1 kHz & 5 kHz steps)
    • Note in SSB mode on LW, MW and SW, tuning steps are 10 Hz and 1 kHz.
    • FM: 64 – 108 MHz (selectable for various markets: Russia, The Caucasus, Caspian/Black Sea regions, Japan, China/Europe, and North America)
  • Modes: AM, FM, SSB
  • Variable filter widths
    • AM: 6, 4, 3, and 2.3 kHz
    • SSB: 4, 3, 2.3, 1.2, and 0.5 kHz
  • Digital Signal Processing (DSP)
  • Antenna gain selection: DX/Local
  • External antenna connections: both BNC (SW and FM) and a high-impedance port (LW, MW and SW)
  • Both 9 and 10 kHz spacing on mediumwave
  • Dedicated fine-tuning control
  • Auto Tuning Storage (ATS)
  • 650 station memories
  • FM stereo/mono
  • Backlit LCD display
  • Treble and bass tone controls
  • RCA line-out audio
  • Full-featured clock, alarm and sleep timer
  • IR remote control
  • Two 18650 lithium cells (included) that can be safely charged internally via USB

Wishlist? The S-8800 feature set is pretty comprehensive, but my dream large portable would also have synchronous detection and an RF gain control, though the latter is not common in the world of portable radios.  Fortunately, the S-8800 does have a local/DX gain toggle.

I’m sure some enthusiasts would also like to see Bluetooth connectivity as on the Eton Field BT, but I personally don’t miss it. I like to keep my HF portables free from anything that could potentially raise the noise floor.

With the exception of synchronous detection, the S-8800 has a solid, comprehensive tool set.

Performance

Over the past two weeks, I’ve had the S-8800 on the air almost every day. I’ve compared it with a number of receivers, but mainly its smaller sibling, the popular Tecsun PL-880. Below, I break down my notes by band.

FM

As is typical with my shortwave portable reviews, I spent less time evaluating FM performance on the S-8800.

With that said, I did compare the S-8800 with the PL-880, PL-680 and CountyComm GP5-SSB and a few other portables. The S-8800 found my benchmark weaker broadcasters with ease.

Here’s a short video demonstrating FM performance with a broadcaster over 100 miles distant:

Click here to view on YouTube.

AM/Medium Wave

I’ve had more inquiries about S-8800 mediumwave performance than I’ve had about any other radio I’ve recently reviewed. Why?  Well, for one thing, some radios in this particular portable format perform quite well on mediumwave––the C.Crane CCRadio-SW, for example, comes to mind.  Also, the S-8800’s large front-facing speaker lends itself to superb AM audio.

Unfortunately, mediumwave is not the Tecsun S-8800’s strong suit.

I did extensive testing, comparing it with much smaller portables: the Tecsun PL-880, the Sony ICF-SW7600GR, the Digitech AR-1780, the CC Skywave, and even a pre-production CC Skywave SSB. All of these portables had better sensitivity on mediumwave.

I posted the following representative video a couple weeks ago in a post:

To reiterate from my previous post, comparing any modern radio with the Panasonic RF-2200 on mediumwave is hardly fair.  For one, the RF-2200 has been out of production for a few decades.  For another, the RF-2200 has a large rotatable ferrite bar antenna that provides excellent gain. The RF-2200 simply wipes the floor with all of my modern portables, as their ferrite bar antennas are but a fraction of the size.

To my ear, the S-8800’s  mediumwave band seems noisier than its competitors. Perhaps this is why it struggles with marginally weak stations.

Here’s another comparison with the PL-880––this time at a totally different location:

Click here to view on YouTube.

With that said, when tuned to a local AM broadcaster, the S-8800 really shines. It produces rich audio which can be customized with bass/treble tone controls and by changing the AM filter width.

I also hooked up the S-8800 to my large horizontal loop antenna. This certainly did improve MW reception, but not as dramatically as I hoped.  Additionally, it seemed to be very sensitive to RFI in my shack even when hooked up to the external antenna.

If you took the S-8800 to the field, added a decent inductively-coupled magnetic loop antenna, no doubt it would improve mediumwave reception, but I still doubt it would come close to the RF-2200 in performance.  As long as I own the latter, I wouldn’t be motivated to do so.

Due to my schedule over the past few weeks, I’ve had precious little time to test the S-8800 on mediumwave at night, but some quick air checks proved performance was consistent with daytime testing.

I am pleased to report that no receiver overloading was observable during testing.

In short: if you’re only considering the S-8800 for mediumwave DXing, you should look elsewhere. I would suggest a dedicated AM broadcast receiver like the excellent CCradio 2E,  a vintage Panasonic RF-2200, or perhaps a used GE Superadio.

LW – Longwave

I’ve spent less time on longwave than I have on mediumwave and shortwave.

With that said, the S-8800 was able to receive our local airport beacons at night with relative ease. I was not able to catch any transatlantic longwave broadcasters, but that’s no surprise as it’s almost impossible on even my commercial-grade receivers during the summer months here in North America.

As I said regarding the mediumwave band, I suspect there are much better radios out there for the longwave enthusiast.

SW – Shortwave

At the end of the day, I believe the Tecsun S-8800 was designed with the shortwave and amateur HF radio enthusiast in mind.

The S-8800 has gapless HF coverage from 1,711 kHz to 29,999 kHz, can be used both in AM or Single Sideband (selectable LSB/USB), and has adjustable bandwidth filters tailored to AM broadcast and SSB/CW (ham radio/utility/pirate) reception. The filter widths are well-chosen for each mode: 6, 4, 3, and 2.3 kHz on AM; 4, 3, 2.3, 1.2, and 0.5 kHz on SSB.

It also has a dedicated fine-tuning control that adjusts steps based on the mode.

All of these are desired features for the HF radio enthusiast.

I’m happy to report that the S-8800 is a very capable shortwave receiver, perhaps even one of the best portables currently on the market.

In every comparison test I made on shortwave, the S-8800 outperformed each of its competitors.

Check out the videos below and judge for yourself:

Weak signal on the 31 meter band:

Click here to view on YouTube.

Very weak signal and deep fading on 15,200 kHz

Click here to view on YouTube.

SSB: Ham Radio QSO on the 40 meter band

Click here to view on YouTube.

CW on the 20 meter band

Click here to view on YouTube.

I was pleasantly surprised by the audio in SSB mode and by how well the filters seem to work. Note in the video the warbling sound as I adjust the fine-tuning control on the S-8800.  But it’s actually only present as I adjust the fine-tuning control; I noticed no stability issue once on frequency.

External antenna

Since the S-8800 has a handy standard BNC connector and high impedance AM antenna socket on the back, I hooked it up to my large horizontal loop. In my testing, it handled that antenna’s gain very well and I was most impressed with the performance.

The front end seems to be robust, and selectivity––which is excellent––was not compromised by my antenna. I was able to pull apart two broadcasts with only 5 kHz of separation that were both quite strong. The S-8800 locked onto the stronger of the two stations with ease. When tuned to the weaker station, I used SSB reception on the upper sideband to ignore the noisier lower sideband which was buried in the adjacent signal. Once I zero-beated the signal, it sounded quite good.

Final thoughts about shortwave performance

Perhaps what the S-8800 has going for it on shortwave is a combination of very good sensitivity, excellent selectivity, and a feature all too often overlooked: good audio fidelity (via the internal two-watt speaker).

The AGC (auto gain control) is actually fairly stable on the HF bands (less so on mediumwave). Like the Tecsun PL-880, the AGC has a soft hiss response when the signal fades below the AGC threshold. While I’m not crazy about this, I must confess that it is pretty easy on the ears when fading is pervasive.

I did note one quirk that could annoy those wishing to copy narrow SSB or CW. If the filter bandwidth is set to .5 kHz and you’re listening to a marginal CW signal, the AGC sometimes mutes the receiver during CW dead space. It equates to very unstable audio with audio levels jumping around wildly. This happened more often when I was copying moderate to weak CW signals. I’ve even noticed it when listening to SSB ham radio conversations, but mostly in the narrow bandwidths. I usually keep the filter set to 2.3 kHz or higher and it hasn’t been a problem at these settings. It’s worth noting that I have observed the same AGC behavior in my PL-880 at times.

The S-8800 ships with two rechargeable lithium cells which provide hours of listening time from a full charge.

I never encountered overloading from local AM broadcasters on the shortwave bands, with the caveat that I never tested the S-8800 in an RF-rich urban market.

One thing I have noticed in general about the S-8800 is that it seems pretty sensitive to RFI indoors (electrical noise in the home, office, etc)––more so than my Sony ICF-SW7600GR, for example. If you live in a noisy environment and never plan to use an external antenna or take the radio outdoors, you might think twice about the S-8800.

Birdies

I’m pleased to report that Tecsun did properly address the “birdie” issue I mentioned at the beginning of this review. Still, like most receivers, the S-8800 does have some birdies across the bands. These birdies are well within the norm for such rigs:  a relatively stable heterodyne sound. I made a short video to illustrate what I mean when I talk about a birdie:

Click here to view on YouTube.

I spent one afternoon carefully mapping out all of the birdies I could find across the longwave, mediumwave and shortwave bands.

Here’s what I mapped:

As you can see, there are no birdies in the middle of sensitive areas like broadcast bands, amateur radio bands, etc. A good report, in my book.

Note that while tuning through the shortwave bands, I used 5 kHz steps. I suppose there’s a possibility I might have missed very weak birdies doing this, but any strong birdies would have been received and noted within the 5 kHz window. On LW and MW, I tuned in 1 kHz increments.

Summary

Every radio has its pros and cons, of course. When I begin a review of a radio, I take notes from the very beginning so that I don’t forget my initial impressions. Following is the list I formed over the time I’ve been evaluating the Tecsun S-8800:

Pros:

  • Brilliant audio fidelity from built-in speaker
  • Dedicated AM bandwidth and fine tuning controls
  • Excellent, bespoke IR remote control
  • Capable SSB mode
  • Excellent shortwave sensitivity (see con: mediumwave)
  • Excellent shortwave selectivity
  • Excellent FM performance
  • Easy-to-read backlit LCD digital display
  • Remote control beautifully equipped for full radio functionality
  • Included 18650 rechargeable lithium batteries power radio for hours

Cons:

  • Lackluster mediumwave performance (see pro: shortwave)
  • No synchronous detector
  • No direct keypad entry (Pro: Remote control has excellent keypad entry)
  • Can’t charge and listen at the same time–not designed for AC operation
  • No backstand
  • Line-out audio level is a little high (hot)
  • When in narrowest SSB filters, AGC can’t reliably handle audio/signal changes
  • Slight “warbling” sound while using fine tune control in SSB mode
  • No RDS display on the FM band

Conclusion:

As I’ve already mentioned, if your primary use of the S-8800 is for mediumwave or longwave DXing, you should look elsewhere. While the S-8800 will serve you well with local AM stations, it will not dig signals out of the noise like other better-equipped AM receivers.  The GE Super Radio, Panasonic RF-2200, or CCRadio 2E are much better options.

But if you’re primarily a shortwave radio listener––? I think you’ll be pleased with the S-8800.

To my surprise, the S-8800 consistently out-performed my beloved Sony ICF-SW7600GR and my PL-880. I fully intend to compare it with other portables in the coming weeks and post the videos here on the SWLing Post. [I will update this review with any other findings.]

I did not mention this in previous posts, but the first S-8800 I received in January––the one with the birdie-chorus problem––also outperformed my other modern portables on shortwave. In part, I feared that when the Tecsun engineers addressed the birdie issue, it could have a negative impact on overall sensitivity. I’m happy to report that it did not.

What’s more, I realize that larger portables do have a place in my life.  You might have noted that I did all of my review testing and preparation outdoors, mostly in a nearby national park. I do this, in part, to insure I’m far away from any RFI, but also I simply love playing radio outdoors.

And the S-8800 was a pleasure to tune and use in the field. I really like the large encoder and find that the multi-function knobs, tone controls, volume, and other buttons are well-spaced–I believe I could operate most of this receiver’s functions with gloves on in the winter. And again, there’s that excellent remote control…

Is the S-8800 a good value? Let’s talk price

Only yesterday, Anon-Co announced the price of the Tecun S-8800: $268 US with free shipping to the US.

This review was in final draft form two days before I learned the price from Anon-Co. I had assumed the price would not be released for another week or two at least, thus I made a few predictive statements that I’ll now quote here:

I understand that the S-8800e is being sold in Europe for 339 Euro, roughly $400 USD, plus shipping. There is no way I’d pay that price; it’s simply too much.

If the price exceeds $300 US, I’d suggest careful consideration, as the S-8800 price would be venturing into the realm of used Sony and Panasonic benchmark portables.

But.  If this radio should be sold for less than $250, or even $200…?  Being primarily a shortwave radio listener, I would certainly buy this radio for that price.

In the end, the price is $18 higher than the $250 I mentioned in my review draft, but I assumed shipping would be tacked on to that price. So $268 ended up being pretty close to the mark.

So I believe the Tecsun S-8800 hovers at the top price threshold of what most radio enthusiasts would be willing to pay for a portable.  At $268, it’s over $100 more than the excellent PL-880 and only $20 less than the Tecsun S-2000. And for radio enthusiasts outside the US, it sounds like shipping will be added to the $268 price. I expect European consumers will pay a premium due to embedded (and required) sales tax and customs handling fees.

Click here to view at Anon-Co.

Nonetheless, I would still consider purchasing at the $268 US mark because of its shortwave performance, ability to connect external antennas, audio fidelity, and the included IR remote control.

I would like to see the price lower than $268. If the price were nearer the $200 mark, it would be a no-brainer––this radio would likely fly off the shelves, and I’d strongly suggest purchasing.

Perhaps, with time, the S-8800 price will decrease. In the meantime, if you have the budget, I believe the S-8800 would make for a nice field companion, pulling weak DX out of the noise with excellent audio fidelity to boot. It’s already been a great field companion for me…and, I’m sure, will accompany me into the field again.

Troy compares the Tecsun S-8800 with the Grundig Edition Field BT

$
0
0

Many thanks to SWLing Post contributor, Troy Riedel, for producing this excellent comparison of the Tecsun S-8800 and Grundig Field BT “lunchbox” radios:


The Lunchbox Showdown

by Troy Riedel

I have been watching with interest all of the information & reviews of the new Tecsun S-8800. Frankly, I was especially interested in how it would compare with the other “lunchbox” SW radio – the Eton Grundig Edition Field BT (the Digitech AR-1748 lunchbox radio is also available in AUS for approximately $207US shipped). As I contemplated which lunchbox to purchase, I put together the following Excel comparison table of the S-8800 vs. the Eton Field BT to assist me in making my decision:

Tescun S-8800

Eton Field BT

Price:

$268.00

$129.99

Tuning Methods: FM / LW / MW / SW FM / MW / SW
Q.Tune Q.Tune
Digital tuner, Jog dial manual tuning Digital tuner, Jog dial manual tuning (Fast, Slow and Hold)
Auto scan tuning with 5 second stop (w/ storage) Auto scan tuning (no tuning storage)
Direct frequency entry using the remote control
Fine Tuning Knob: SW Meter Band
No soft muting when tuning Subtle Soft Muting when tuning
Station Storage Methods: Manual storage: tune into stations manually and store them Manual storage: tune into stations manually and store them
Semi-auto storage: storing stations during auto scan
Auto Tuning Storage (ATS): automatically tune into and store stations
FM / MW / LW / SW FM / MW / LW / SW
AM Bandwidth: Bandwidth selection (2.3, 3.0, 4.0, 6.0) Narrow & Wide Settings (3.0*, 6.0*) *Reported
SSB: SSB (USB/LSB)

N/A

SSB tuning steps at 10 Hz / 1 kHz
SSB Bandwidth selection (0.5, 1.2, 2.3, 3.0, 4.0)

N/A

FM with RDS

N/A

Bluetooth
Adjustable shoulder or hand carrying belt Hand carrying strap
Remote control operation

N/A

SYNC:

N/A

N/A

Gain: Local / DX antenna gain switch Local / DX antenna gain switch
SW RF Gain Control
Memories: 650 station memories 50 station memories
Stored stations memory browsing
Auto Sorting Memory
LCD: Standard Backlight Orange Backlight
5-seconds or continuous settings 10-seconds or continuous settings
Clock/Alarm Time: Clock/Alarm time (24H-format) Clock/Alarm time (12 & 24H-format)
Alarm: (1) Alarm (2) Alarms
By radio only By radio (60-mins) or buzzer (2-mins)
Digital Display: Frequency & SW meter band Frequency & Band (e.g. FM, LW, SW1)
Signal strength indicator Signal strength indicator
Stored station location Stored station location
Clock & Alarm time Clock
Volume Level (while using remote)
Battery indicator & charging time Battery Indicator
Sleep Timer A & B (Selectable)
RDS Info

* No Lock Feature

Display Lock “On”
Tuning Speed (Slow, Fast, Stop)
Sound Tuning: Bass & Treble Bass & Treble
Line In:

N/A

3.5mm Stereo Input for mp3 Player
Line Out: (2) RCA Left & Right Stereo Channel Line Out (1) 3.5mm Line Out for tape recorder or audio amplifier
Ant Selector: Int. or Ext. Switch for FM/SW Int. or Ext. Switch for FM/SW
FM/SW Antenna: BNC: Low-impedance (50?) FM/SW Coax: Low-impedance (50-75?)
MW Antenna: High-impedance (500?) wire clamp terminals High-impedance (500?) wire clamp terminals
Battery: 2 x 18650 Li-ion Cell 4 x “D” Cell
AC Adapter: No AC included – does include a USB mini-B charging cable 7v 1200mA DC Neg Center included

Yes, the S-8800 without a doubt has more features than the Field BT.  However, the S-8800 is slightly more than twice the price of the Field BT ($268 vs. $130)!  Does the performance of the S-8800 equate proportional to the price difference?

Shortly after I made my Excel comparison table, Thomas published video comparisons of the S-8800.  I very much appreciated the review and video comparisons that pitted the S-8800 against several popular portables.  It gave me a baseline to set my expectations.  However, those videos didn’t answer my question: “should I purchase the S-8800 or the Field BT”?

I contacted Thomas and I told him “we need an S-8800 vs. Eton Field BT” video comparison so SWL’ers have a true lunchbox vs. lunchbox comparison!  I volunteered to purchase an Eton Field BT and have it delivered to Thomas for him to compare the two (after which he would forward the Field BT to me).  After he hesitated, I replied: “what if I buy the Eton and we meet in North Carolina to compare them together”?  Fortunately Thomas readily agreed and I made the 6.5-hour journey from Southeast VA to Mount Mitchell State Park for the Lunchbox Showdown (864-miles roundtrip on my odometer)!

Thomas and I had a limited amount of time.  I arrived at noon.  Thomas and I had 8-hours … and that included time for Thomas’ Parks On The Air (POTA) Activation, our S-8800 vs. Field BT comparison, we had to eat (it was a long drive for me!), and Thomas brought many other toys so we had to carve out time to “play radio” (and I can’t drive 400+ miles to Mount Mitchell and not walk to the summit of the highest point east of the Mississippi River!).

Luckily conditions were as ideal as I have ever seen them (evidenced by the fact Thomas made contacts from TX to the Azores with his Elecraft KX2).  So please keep in mind, what follows is in no way a complete comparison.  And to be clear, it was never my intention to review either receiver (there are many people more competent than I am that have already done this – Thomas among them!).

My interest re: these two models is primarily limited to each’s shortwave performance (I use a Sangean PR-D15 and a Grundig YB400 for AM DX, I prefer my Sangean PR-D15 for FM and I own 12 shortwave receivers).  Thus our goals were to find and compare multiple representative SW signals.  Thomas is obviously familiar with local AM stations in the area that he uses in his comparisons, thus we sought out a few AM signals (I recorded one to illustrate one huge difference that we both perceived in the two radios).  Due to time, hunger, and eventually darkness we had to call it a day at 8 P.M.

I used my iPhone 6S to record the following comparisons.  This was the first time I recorded shortwave signals.  In retrospect, I wish I had made the recordings longer but at the time I was unsure of how much memory each recording would used, how much time it would take to upload, etc., so I kept everything at 1-2 minutes.  As you will see, I recorded nearly all of the signals with the backlight off.  You’ll see me reaching in, on Shootout 5, to tune off frequency – then back on – simply to show how the backlight would/or would not affect the weak signal on the Field BT (you’ll also see that it’s harder, outdoors, to read the Eton display without the backlight vs. the clearer Tecsun S-8880).

The Eton Field BT has its own SW RF Gain (a huge bonus) and you will see me reach into the field of view once or twice to fine tune the Field BT on weaker signals.  And if you’ve studied my comparison table, you’ll see that the S-8800 has multiple bandwidth choices whereas the Field BT only has Wide & Narrow settings.

You will see me occasionally change the BW on both.  I preferred not to speak during the videos as not to mask the audio of the signal thus I will set-up the specifics of each video with each individual link to my new YouTube Channel, SW Hobbyist, that I set-up to host these (and hopefully many future SW-related videos to include radio recordings & antenna comparisons).

All videos

Date: Friday, 06 October 2017

Location: Mount Mitchell State Park, NC USA

Shootout #1

Frequency: 15580 kHz

Broadcaster: Voice of America (VOA)

From: Botswana

Target: East Africa

https://youtu.be/nZO_yTRjykM


Shootout #2

Frequency: 15610 kHz

Broadcaster: WEWN

From: Vandiver, AL

Target: Europe

https://youtu.be/CEzKA1116ow


Shootout #3

Frequency: 15000 kHz

Broadcaster: WWV

From: Fort Collins, CO

* Wow, that’s a strong signal – is this FM?!

https://youtu.be/LJ2YykJ7Wz0


** Shootout #4

Frequency: 15130 & 15140 kHz

Broadcaster: NHK Radio Japan via Issoudun, France & Radio Habana Cuba via Bauta, Cuba

Target: Africa & Western North America

https://youtu.be/aBW0imojl94

** I wish I hadn’t prematurely ended this recording – the Eton Field BT signal on 15130 improved after the recording ended


Shootout #5

Frequency: 15245 kHz

Broadcaster: Voice of Korea

From: Kujang, North Korea

Target: Europe

https://youtu.be/D5cjlseVNfE


Shootout #6

Frequency:  11810 kHz

Broadcaster: BBC

From: Ascension Island

Target: Central Africa

https://youtu.be/oXbxeLFl2-0


Shootout #7

Frequency:  630 AM

Broadcaster: WAIZ Hickory, NC

*** This is where I believe you will see a difference in the sound/speaker

https://youtu.be/kXNGNFgnDB4

General Conclusions

Thomas and I both felt that the AGC of the Tecsun S-8800 was very slightly better (more stable – absolutely no “chug”) than the Eton Field BT (again, a very subtle difference). We both liked the sound of the Eton Field BT much better – it was crisp, full and just seemed to “pop” through its grill (see Shootout #7). The huge thing we both disliked with the Eton Field BT is its tuning dial. Yes, it has Q-Tune so one can jump from 5000, 6000, 7000, etc., with the push of a button but the tuning dial (even in “Fast” mode) is painfully slow and deliberate (dare I say horrible in comparison to the S-8880?). We both love the fact the S-8800 has a remote. But even without the remote, the S-8800 was much more pleasurable to manually tune.

Not to speak for Thomas, but I believe we generally felt [overall] that the SW signals were essentially close enough to call even … the edge to the Tecsun on a couple and the edge to the Field BT on a couple of others (I specifically remember us both commenting on an Arabic language broadcast from Radio Saudi Arabia where we both felt the Field BT was a very clear winner – that was one of the signals that I did not record). The better “sound” of the Field BT’s speaker may have influenced our opinions – a sound that was markedly better on FM, better on AM, but a sound that was much closer on SW.

My final thoughts and conclusion: Radios are like vehicles. No one vehicle is best for everyone. Each vehicle has a specific purpose and each has a subset of features. I own a large travel trailer. I need and thus own a heavy-duty diesel truck to tow it. But I surely wouldn’t recommend my vehicle to somebody who only needs a commuter vehicle. That’s why we have everything from SmartCars, to sedans, to SUVs, to dually diesel trucks. The same goes for radios. Some people will absolutely need SSB, others may demand SYNC (neither of these units has this feature!) while others may choose a radio based on size (compact for travel or larger models with a large, easy-to-read display for desk or tabletop use). Until now, I felt the video comparisons we had for the S-8880 were comparing a truck to an SUV to a sedan. At least now we have a few videos of two lunchbox radios compared side-by-side. True, one (the S-8800) is fully loaded (in vehicle terms: a 4×4 with a touchscreen GPS and DVD entertainment system). But not everyone who requires a truck needs a 4×4 with GPS and DVD entertainment system. Some truck owners prefer the smoother ride from a 4×2 truck. I think that’s the best way to describe these lunchbox receivers.

Am I glad that I bought the Eton Field BT? For me – despite the cumbersome tuning of the Field BT – I feel the S-8800 is not worth 2x the price of the Eton (I got an even sweeter deal for my new, sealed box Field BT off eBay that was well under the $129.99 street price). But you can make your own decision, you can decide which features are must-have, and you can listen to these videos as well as the other videos that Thomas has already posted and determine if one of these lunchbox models are in your future. And because I learned so much regarding the video recording of shortwave signals (I suffered from tunnel vision while recording – not fully aware of what I caught and what I missed), I hope I can meet-up with Thomas again so I can do a better, more thorough job with a “Lunchbox Comparison, Deuxième Partie” (that French was for Thomas – I hope I got that correct!).


Thanks for putting together this comparison, Troy! It was great hanging with you last week on Mt. Mitchell!

If you’re shopping for either of these radios, you have a few options:

The Tecsun S-8800 is only available worldwide via Anon-Co at time of posting. Eventually, they will begin appearing on eBay. There are retailers in Australia and Europe also selling the model (Important: make sure you’re ordering a model from the latest production run which solves the DSP birdie problem in early units).

The Grundig Edition Field BT is available from a variety of retailers including Universal Radio, Amazon.comCrutchfield, Adorama and others.  Occasionally, like Troy, you can find excellent prices on the Grundig Edition Field BT via eBay.

Dmitry’s video overview of the S-8800


Discounted New Tecsun PL-310ET Receivers on Amazon

$
0
0

Today I noticed that Amazon is offering an excellent price on the fine performing Tecsun PL-310ET portable AM-FM-SW radio.

The current sale price is $39.80 with free shipping for Amazon Prime members. This is a good price on a compact portable radio normally selling for $48.00.

Besides being a worthy value in a low cost portable, DSP-based radio for the SWL hobbyist, the PL-310ET also excels as a receiver to keep in your vehicle’s glovebox or your emergency kit.

The PL-310ET was included in Gary DeBock’s 2015 Ultralight Radio Shootout Review, and it fared quite well in Gary’s tests.

Guy Atkins is a Sr. Graphic Designer for T-Mobile and lives near Seattle, Washington.  He’s a regular contributor to the SWLing Post.

eBay Deal: Tecsun PL-660 for 50.90 GBP shipped

$
0
0

Many thanks to SWLing Post reader, George T, who writes:

Just a tip that I found a bargain price on eBay for a new Tecsun PL-660. The price is £50.90 with free P&P…best I’ve ever seen. I grabbed one. The unit ships from China. The seller has a 97.4% positive rating and apparently sells a high volume. Many of his negatives are about shipping time. I suspect the shipping is basic post from China, so I don’t expect it to arrive anytime soon.  Also, eBay will back the purchase. It appears they have at least a few more available.

Oh yes…the seller notes they ship worldwide with the following exceptions: “Germany, Puerto Rico, Hong Kong, Indonesia, United States, Burkina Faso, Lesotho, China” What an intriguing set of exceptions!

Click here to view deal on eBay.

Thanks for the tip, George!

Tecsun PL-680: Rolf touts enhanced performance using PL-660 mod

$
0
0

Many thanks to SWLing Post contributor, Rolf Snijder, who writes:

I have made the same modification to the Tecsun PL-680, that was done [by many on the] PL-660 earlier.

The PL-680 is now a great radio; I think now one of the best! I do not own a PL-660, so I cannot compare.

Photo detail

Overview of modification.

For disable soft mute you can see the 2 joints and you must scratch a path on the print near the switch. (same on a PL-660)

Closeup of joint #1 (click to enlarge)

Closeup of joint #2 (click to enlarge)

With the tone switch [on the left side panel of radio] you can turn the muting on and off. On FM I need to set it on for better results, but on LW MW and SW always off!

Frequency adjust is with the pot: adj1391 in the right corner. (for the 1 kHz off freq)

Click to enlarge.

Hope I can help someone with this on your great site.

Greetings,

Rolf Snijder
Netherlands

Many thanks for sharing this PL-680 mod, Rolf! This seems like a simple enough project and one that can be undone if you aren’t pleased with the results.

Post readers: Please comment if you’ve made this modification to your PL-680 or PL-660 or if you have other successful modifications to share!

Tecsun PL-300 series modification: disabling soft mute

$
0
0

Many thanks to SWLing Post contributor, Troy Riedel, who shares the following tip. Troy writes:

While surfing the Net I found the following procedure that is said to “disable soft muting in Tecsun 300-series radios”.

I have a PL-390 and this has indeed seemed to work on it but I didn’t notice a difference with my PL-365.

Since I just found & tried this, I don’t know if this procedure must be repeated each time you use the radio? Maybe [Post readers] have heard of this before and/or have experience with it?

Here is the “reported” [supposed?] procedure that worked for the PL-390:

To disabling “Soft Mute” on Tecsun 300-series radios:

1. Select a shortwave frequency, preferably where there is no stations transmitting.
2. Tune down the frequency range with the dial, don’t tune up or it won’t work
3. Press the VF Scan button to let it automatically tune down
4. Tune down with the dial to stop the automatic scan. If the background noise is higher, then the “soft mute” / “dynamic squelch” has been disabled.

Thank you, Troy! I was unaware of this modification, but it seems easy enough to implement.

Post readers: Anyone have experience using this mod across the Tecsun 300-series receivers? Please comment!

Rolf’s PL-680 modification allows external antenna on LW and MW

$
0
0

The Tecsun PL-680

Many thanks to SWLing Post contributor, Rolf Snijder, who writes:

I did a modification today on the Tecsun PL-680 [which allows for an] external antenna on LW and MW.

The internal ferriet is also working, but on my active loop, MW and LW is now working !

So far away stations I can now receive on this portable radio.
It is only a560 pF capacitor added!

Click to enlarge.

Click to enlarge.

It works on LW and MW now with this mod.

FM is less now I think, maybe I will put it on a switch so I can turn it off.
And now also the ferrite is still working, so I hope to find a solution for that.

Many thanks for sharing your modification and photos, Rolf! Check out Rolf’s other PL-680 mod by clicking here.

For Sale: My Tecsun PL-600

$
0
0

>>>>>UPDATE: This radio has been sold!  Thanks for your interest!<<<<<

I’m in the process of thinning the herd around here at the SWLing Post HQ! I have dozens of portable radios that I rarely use–many I keep solely for review comparisons and benchmarking.

I’ve always loved the PL-600, but I rarely turn it on these days. I have the PL-660, PL-680, PL-880 and a number of other similar portables for review comparisons.

I used to lug this receiver around quite a bit–somewhere in my travels I scratched the display a bit.

It doesn’t hinder the ability to read the display–not cracked, just scratched–but it’ll turn off someone looking for a perfect specimen for sure. Indeed I’m sure there are other light scratches to be found.

It comes with the original box, soft case, earphones, power supply and manual. Essentially, the full original package.

This unit, of course, works beautifully. In fact, I turned it on for the first time in a few months and check out what was on frequency! So–BONUS!–if you’re a spy, this might be your dream radio.

I want this to be a good deal for someone, so I’ll ship to the first person who offers $40 or more (not too much more, okay?). Free shipping via the USPS. Payment via PayPal.

If interested, just contact me via email.

>>>>>UPDATE: This radio has been sold!  Thanks for your interest!<<<<<

I’d prefer not to ship internationally as it often involves a headache and would incur additional costs which I can’t predict. 🙂 Thanks for understanding.

All I ask is that you put this little radio on the air!

Tecsun PL-660: A simple hack to scan the air band

$
0
0

Many thanks to SWLing Post contributor, Bruce F, who writes:

HI Thomas, I thought I would put this idea out to your site – in case it isn’t already there. It’s a brilliant solution to the apparent lack of a working Air Band scan function on the Tecsun PL-660.  Note – I did not come up with this idea, but came across it in a Yahoo group.

It IS possible to scan the Air Band on the PL660, as long as you have picked out WHICH Air Band frequencies are in use in your area. There are websites which list these frequencies for each airport:

Here’s how to set up the PL-660:

  1. Pick an empty page in the Memory.
  2. Put in a shortwave frequency in the first empty space; the “00” slot.
  3. Then fill in the succeeding spaces on that page with the Air Band frequencies you’ve chosen.
  4. Now go back to the “00” slot and hold down the scan button.

Works on my set!

What a cool trick!  I’ve lent my PL-660 to a friend, but as soon as I get it back, I’ll also try this trick by setting up a page dedicated to my local aviation frequencies!

Thanks, Bruce!


Tecsun PL-880 hidden feature/hack: 1 kHz bandwidth on shortwave

$
0
0

Many thanks to SWLing Post contributor, Guillermo, who writes:

I own the PL-880 and just discovered a new feature : a 1.0 kHz bandwidth mode on shortwave (SW only not in MW).

The procedure to get it is as follows:

  1. Tune to any frequency on shortwave and connectan external antenna (indoor or outdoor) via the miniplug port, then turn off the radio.
  2. Disconnect the external antenna from the miniplug
  3. Then turn on the radio and check when you push AM BW the 1khz showing on the display and then reconnect the external antenna. Now you can enjoy the 1.0 kHz bandwidth on shortwave!

Note: This procedure has to be done every time you move frequency, disconnect the external antenna, or turn off the radio once the 1.0 kHz bandwidth has been activated. To get this feature permanently (once you ‘ve already enabled it) you must to disconnect the external antenna while the radio is ON. If the antenna is disconnected after turning off the radio the feature disappear and all (steps 1 and 2) have to be done again.

Well, I hope you understand this description–if not please let me know, and tell me if it works on your unit, or it is just works on mine.

Thank you, Guillermo! I see where this is somewhat of a fragile adjustment in that a number of actions could change the bandwidth back to a previous setting, but nonetheless is quite a fascinating hack/hidden feature! Thank you and I’ll add this to our list of PL-880 hidden features.

Post readers: please comment if you can successfully enable the 1.0 kHz bandwidth on your unit.  Please comment with your radio’s manufacture or purchase date if possible.

Comparing the XHDATA D-808, Digitech AR-1780 and Tecun PL-660 on shortwave

$
0
0

On Friday, I managed to set aside an hour to finally do a video comparison of the Digitech AR-1780 and the new XHDATA D-808.

I placed a table in my driveway, far away from any source of RFI, and set up the radios in identical configurations: same orientation, antennas fully-extended, same AM bandwidth (4.0 kHz), same audio levels, etc. For good measure, I also included the venerable Tecsun PL-660 in the mix.

This was still daytime listening, so all of the stations were from 31 meters and up.

Apologies in advance: somehow the cord from my monitoring headphones is in the shot on some of these videos! I’m still getting used to the new Zoom Q2n video camera:

WRMI 9,455 kHz

Click here to view on YouTube.

WWV 15 MHz

Click here to view on YouTube.

Deutsche Welle 15,200 kHz

Click here to view on YouTube.

Afia Darfur 9,825 kHz

Click here to view on YouTube.

I should add that QSB was slow and deep on Friday. Twice I had to re-shoot videos because the station simply faded into oblivion.

I plan to do a few more comparisons with the XHDATA D-808 and Digitech AR-1780 soon as I’m very curious how SSB reception may differ.

Please comment with your observations. Which radio did you prefer? I’ll hold my comments for now.

Video: How to calibrate the Tecsun PL-660 frequency offset

$
0
0

Many thanks to SWLing Post contributor, Mike Mander, who writes:

I’ve recently really been enjoying swling.com. Thanks for having such a great resource online with shortwave radio and hardware reviews, tips and more! I started listening to shortwave on an old Philips portable receiver back in the late 70’s as a teenager. Recently, after decades of not listening to shortwave, I decided to buy an Eton ‘Grundig Edition’ Satellit radio and in no time at all, I had also acquired a C.Crane Skywave SSB and now, within the last week, a Tecsun PL-660.

[…]I thought I’d record a video showing how one can calibrate AM, FM, SW wide-bandwidth as well as SW narrow-bandwidth independently, and how to reset those calibrations back to factory default. I have not heard it mentioned anywhere that one can calibrate both wide and narrow bandwidth SW modes independently.

Online, I have read about many people being disappointed in their PL-660’s wide-bandwidth frequency calibration, where often being on-station results in the frequency being up to 5 kHz too low, and it seems many simply return their radios as defective, not realizing how easy it is to recalibrate. This is the first “instructional” video of this sort that I’ve ever posted online, so you’ll have to pardon if I am perhaps not explaining things clearly enough:

Click here to view on YouTube.

Excellent video, Mike! You’ve done a fine job making the explanation clear and easy to follow. Thank you for sharing!

A detailed review of the XHDATA D-808 and comparison with the Tecsun PL-660

$
0
0

Many thanks to SWLing Post contributor, 13dka, for the following guest post:


A review of the XHDATA D-808

by 13dka

After all the recent buzz about the new XHDATA D-808 I had to get one. I got mine 3 weeks ago and I couldn’t help comparing it a lot with my PL-660. The PL-660 lends itself to such a comparison: it turned out to be the most sensitive shortwave portable with SSB in some comparison tests, so it became some kind of benchmark radio for this class of receivers and it has the same coverage as the D-808. Here are my findings, let’s start with the important stuff:

Performance

13dka’s “happy place” on the German North Sea shore.

I always try new receivers at my favourite listening post at the (German) North Sea shore, many of you know how beneficial such a location is for DXing. My favorite spot there is far away from any houses, power lines or other interference sources on the land side, so besides some sheep-made noise the man-made noise is as low as it gets, measured less than -130dBm (which is the receiver noise) on a 1/2 lambda dipole above 10 MHz.

At the same time the close proximity to the water results in somewhat boosted signals, so I can assess both reception quality at the lowest sensitivity threshold and behavior with strong signals. Sometimes it lets me find quirks that would go unnoticed anywhere else.

Here are my findings with the D-808:

Sensitivity

Longwave

Since users in the US have little ways to test that, let me assure you that all rumors you may have heard about a deaf longwave are perfectly true: the European LW broadcast band is pretty much not existing on the D-808. All those reports (e.g. many to find in Amazon reviews) indicate that really all D-808 are affected. The PL-660 is known to be very deaf on LW as well but it picks up a few stations in the evening, only some of them leave a faint clue on the D-808 and it can’t pick up BBC 4 on 198kHz even at night.

The signal meter indicates that it gains some sensitivity only above 300kHz, but from there it quickly starts to beat the PL-660 – during the day I can hear all of the local NDBs, something I can’t say about the PL-660.

AM broadcast band

This continues throughout the AM broadcast range – best tested during the day and on early evenings, the D-808 lets me ID weak stations that are just not there (yet) on the PL-660. Being noticeably better than the Tecsun, I then compared it to my old Grundig Satellit 400 (which has an average sensitivity on MW) and the D-808 matches its performance perfectly. So perhaps it’s not exactly a MW DX machine with just its internal loopstick but it performs well enough to make the band enjoyable.

Trying that at night and indoors shows why the right time and a low-noise location (or alternatively proper test equipment) are so important for such comparisons: any weak station sticking out of the distant and local QRM there is not as weak as it sounds anymore, both QRM and wanted signal are now well above the sensitivity thresholds of both radios and so SNR is defined only by the QRM, not the receiver. That means both radios falsely appear to have exactly the same sensitivity.

Shortwave

Notwithstanding some duds, the PL-660 is known to be a little sensitivity monster on shortwave. When I don’t feel like putting up wires etc. for my SDR, I just take the Tecsun to the beach and through the years I own it, I’ve logged plenty of true DX (JA, VK/ZL or WWVH on a regular basis) with it there, just using the telescopic whip.

Only below 3 MHz it’s not all that great on the whip, and that’s where the D-808 beats it – listening to top band (160m) hams works surprisingly well for a 25 inch whip. Between 3 and 30MHz the D-808’s sensitivity appears to be almost on par with the PL-660, the PL-660 often wins in terms of intelligibility at the “minimum discernible signal” (MDS) threshold. For example, on a day with bad conditions Gander Radio on 6604kHz USB had a barely audible signal on both radios. But I could occasionally decipher some words on the Tecsun that didn’t make it through the noise on the D-808. These photo finish victories for the PL-660 can be observed across most bands, but it needs ridiculously weak signals to spot the difference.

This difference is partly due to the fact that the D-808 seems to be a tad more noisy and partly owed to the better speaker of the PL-660. But the PL-660 also sports the often frowned upon “soft muting” feature, thus creating an impression (or should I say illusion?) of a pretty quiet receiver. I find it hard to tell whether the D-808 is really noisier than the PL-660, or just lacking this permanent noise reduction. I think this feature potentially even increases intelligibility on SSB a tiny bit, but on AM it’s just disturbing and makes the Tecsun lose its sensitivity advantage. Bottom line is that the D-808 is at least very close to the PL-660 in terms of sensitivity on shortwave and I find that quite remarkable.

FM

Both receivers are pretty identical in FM performance on their whip antennas. Sensitivity is good enough to pick up high-power stations more than 100km away in times without any elevated conditions. Both receivers don’t need much signal to make a station intelligible, so when conditions improve a tiny bit (“marginal” indications on the Hepburn Index map) the band already gets populated accordingly. One difference is the coverage: the PL-660 can be switched to cover the Japanese FM band (76-108MHz) only, the D-808 covers the old OIRT band (64-108MHz) on top. What makes the D-808 the winner is its RDS/RDBS capability and the size, it certainly has the sensitivity needed for some ad-hoc FM-DX when you find yourself bored on a hill or in sudden tropo conditions.

By the way: RDS gets decoded sufficiently fast and starts to show on signals with an SNR of at least 12dB (see the bit about the RSSI/SNR meter below). If the station transmits date information it will set the clock automatically, but when you go on a hunt for stations it may receive some garbage data that resets the clock to a wrong time. It may be best to turn on the automatic only occasionally to set the clock, then turning it off again.

Air Band

The D-808 is at least as sensitive as my Alinco DJ-X11 scanner and skunks the rather deaf Tecsun in this band. Unlike the PL-660 and most other small receivers covering that band it has a squelch, which is by the way active on all bands.

What it lacks is the new 8.33 kHz channel spacing, the “Fast” tuning step is still 25 kHz (“Slow” is 1 kHz) and the scan searches the band in 25 kHz steps as well, so I have to tune in the new channels manually. But while it lacks the new spacing, it absolutely has the selectivity for it – the AM filters are all available on the air band as well and even the widest one is still good enough to separate adjacent channels sufficiently. My 6 times more pricey Alinco has the new 8.33 kHz channels but it can’t separate them at all.

The D-808 is a great air band receiver!

Selectivity

The PL-660 has 2 (I think unspecified) ceramic IF filters for SW, which are doing a good job serving 90% of all typical purposes for such a radio. The D-808 on the other hand utlizes the DSP for IF filtering and offers whopping 11 different bandwidths (6 on AM and 6 for SSB), this is even more than the PL-880! This sold the D-808 to me the most, for example I like to improve my very poor CW listening skills every so often, and always having an even narrower filter up the sleeve can save otherwise hopeless DX reception in the ham and broadcast bands. But are they any good?

SSB: 500 Hz, 1 kHz, 1,2 kHz, 2,2 kHz, 3 kHz, 4 kHz

The 500 Hz “CW filter” seems to have a rather slow cutoff, unlike a true 500 Hz CW-filter it leaves voice communication almost intelligible. Still beats trying to hear CW through a regular SSB filter though! The 1 kHz filter seems to be the only one with an offset lower skirt (=less bassy sound), which can be useful in some cases. I’m not quite getting the purpose of the 1.2 kHz filter, I think I’d prefer a 1.8 kHz filter for a step between 1 and 2.2 kHz. The 1.2 through 4 kHz filters have the steeper cutoff you’d expect from DSP filtering and serve their purpose pretty well. In the “Gander Radio” example above, the narrow filter on the PL-660 couldn’t keep 4XZ’s CW signal on 6607kHz in check, while the D-808’s 2.2kHz filter eliminated the CW signal completely. I’d still take the bandwidth figures with a grain of salt though.

AM: 1 kHz, 1,8 kHz, 2 kHz, 2,5 kHz, 3 kHz, 4 kHz, 6 kHz

Oddly, the published bandwidth for the AM filters seem to be “audio bandwidth” (or “per sideband”) figures rather than IF-bandwidths, so they equate to classic IF filters with 2/3,6/4/5/6/8 and 12 kHz bandwidth. The only overlap is 4 kHz, hence I say it’s 11 different bandwidths, not 10. I think these AM bandwidths should cover all requirements that might come up, on top of those you can try ECSS reception with the SSB filters.

SSB Reception

On pretty much all of the tiny shortwave portables, SSB reception comes with some tradeoffs and the D-808 is no exception. When the PL-880 hit the market a few years ago, the amount of filters for SSB offered by the Si4735 DSP raised my hopes for improved SSB, but unfortunately the D-808 has the same problem that kept me from buying the PL-880 back then, and some on top:

AGC distortion

Like the PL-880 (at least some of them), the D-808’s AGC has a way too slow attack rate, the first portion of any strong SSB/CW signal is distorted before the AGC levels back, and it increases gain fast enough that even short talking (or keying) pauses make the next syllable distorted again. This seems to plague most (if not all) Si4735-equipped radios, so that might be actually a bug of the DSP.

Tuning

The chuffing noise is making tuning through the band quite bad in SSB mode, it’s even worse than the early digital “keypad”-style radios in the 1980s: every tuning step is causing first a short muting of the signal, then audio comes back with a loud “chuff” from the AGC kicking in with full gain – tuning sounds like a model railway steam engine sound chip gone mad. Luckily, fine tuning with the thumb wheel doesn’t have this issue.

Filter dropouts

Another issue is an occasional effect that sounds and feels like the filter drops out when you tune through the band. The chuffing sounds different and the background noise sounds wider with more hiss, then after a while (this can take several seconds) the filter pops back in with the regular puff from the AGC.

Slow mode switching

When switching to SSB a “loading bar” shows up first, the entire process between hitting the “SSB” button and getting reception again takes 5 seconds. Actually, these radios basically consist of a “radio-on-a-chip” and a microcontroller so it really might be a loading bar we see there. This controller seems to be not exactly fast in the D-808 anyway, so even using the tuning knob comes with occasional hesitations – I advance the main tuning encoder one indention and the frequency changes only 1-2 seconds later. Changing bands is not exactly fast either but at least toggling between USB and LSB works instantaneously.

In comparison, the PL-660 has none of these issues – tuning is smooth and fast, and the AGC is less borked. So tuning the D-808 isn’t elegant and it doesn’t sound exactly beautiful on SSB. On the other hand it has great frequency stability, great selectivity and sensitivity and I can hear what I want to hear anyway. At 1/3 of the price for a PL-880 and pocket-friendly 2/3 of its size I decided to avoid overrating the quirks.

AM Reception

… is fortunately less odd. The chuffing gets replaced by less annoying muting when tuning in AM mode, the ability to quickly scan a band with the main tuning knob seems to be less hindered by that. The PL-660 has a mediocre sync detector and the D-808 has not, but it can score with easier ECSS reception through its much less fiddly fine tuning in 10 Hz-steps (range +/- 990 Hz with the last digit omitted in the display) and the choice of filters is a clear advantage over the Tecsun’s 2 bandwidths in tricky DX situations. As mentioned above, the Tecsun is also losing its sensitivity advantage due to the soft muting on AM, so its remaining big plus is the more pleasant speaker sound.

Signal handling capabilities

As mentioned above, signals can increase quite a bit in very close proximity to the water. When conditions were good, I’ve witnessed occasional overloading even with just the whip antenna on the PL-660 there. But the Tecsun has a 3-position sensitivity switch that first turns off the input amplifier and then adds an attenuator, so it can manage these situations by turning off the preamp and it happily digests signals from full size dipoles, long wires and active antennas with the built-in attenuator in the signal path.

The D-808 has no such thing and that makes it at least as vulnerable to overloading from good conditions or big antennas as the PL-660 without attenuation. At the beach it exhibited very faint intermodulation even at propagation conditions that were just “not quite as crappy as the current record low” when the Tecsun did not. They were so soft that I think this can’t be heard when the noise level is a bit higher, still a bit strange. Intermodulation products seem to show up most prominently around 7MHz, 10MHz and in the 15m ham band first.

Other than that, it seems to abide <10m/30ft of wire just fine and it gets along with my ML-200 active loop, currently indoors with a rigid 80cm aluminum loop, unless the RRI transmitters populate 49 and/or 41m after midnight. That station occasionally hits the 9+60 mark on my SDR with a dipole and when they’re on, the D-808 has to be tuned far away from these bands or disconnected from the loop to stop the pumping, desensitizing and intermodulation products. Interestingly, strong signals often make the filter drop out (as described under “SSB reception”) as well. A theory could be that this happens when an off-band signal (and/or the AGC causing “clipping”) makes an AD-converter run out of bits.

That even regular good signals outside the filter passband can trigger unwanted AGC action might be more or less common with most of those DSP radios. The massive worldwide contest activity on March 24/25 was a nice opportunity to test that. Even though I fled to the less crowded upper region of the 20m-band and it was an hour after sunset so the band was closing, I noticed the AGC was pumping a lot while listening to a contester with a moderate signal. It could be the the ceramic filters (which are said to have better out-of-band rejection) or just the way my Tecsun’s AGC works (or malfunctions) differently, however this effect is much less pronounced on the PL-660.

Frequency stability, accuracy, birdies, quirks

Both receivers are generally very stable and don’t exhibit a noticeable warm-up drift. Just to see what happens, I took the D-808 from a very warm apartment into cold (-5°C/28F) and stormy weather outside. The internal (and very slow changing) thermometer of the D-808 indicated an internal temperature drop of 12°C within 10 minutes and if there was a drift at all, it drifted less than 10Hz.

Comparing the BFO frequency accuracy (using RWM on 4996 and 9996 kHz) brought up some slight offsets across the coverage range, with different curves for LSB and USB:

4996: USB=-160 Hz, LSB=+110 Hz
9996: USB=-190 Hz, LSB=-300 Hz

So particularly on LSB, the offset on my D-808 varies quite a bit over the entire coverage range but I think this is within the allowable tolerance for such a radio. The PL-660 has slightly better results but it also has a center-indented fine-tuning knob making small corrections quite difficult. In AM mode they are both spot on.

So far I couldn’t find birdies anywhere on the D-808. The PL-660 is pretty clean on shortwave too, but it has hefty birdies around 100, 200 and 970kHz, despite the efforts Tecsun has put into shielding and clean PCB design.

SWLing Post reader Mike reported a loud “pop” when changing bands. I can replicate that but it’s not that loud here. I’m getting a much louder pop (independent from the volume setting like Mike’s pop) when using the band scan function though. If I’m tuned to a station and another station (strong enough to stop the scan) is quite close (10-15 kHz) to the station where the scan was started, a loud pop will be heard when the scan stops at the other station.

Operation/Ergonomics

Both receivers have some “thin plastic” feel to me, but while my PL-660 has some slightly rattly and wiggly buttons and knobs rubbing against the casing, the D-808 has none of those and feels a tad more solid. The tuning knob and the fine-tuning thumbwheel have quite strong detents, so they are not very prone to unintentional detuning. The D-808 lacks the weight and the tiny rubber feet that keep the Tecsun fixed on the table.

Control

I’ve seen quite a few complaints/misunderstandings about the D-808’s operation and I think this is due to the fact that there is a fundamental difference between e.g. many Tecsuns and the D-808 in terms of keypad usage: the PL-660 is prioritizing direct frequency input and the D-808 makes memory operation easier. It couldn’t be any easier indeed – depressing a number button on the keypad for more than 3s stores a frequency, hitting it shortly loads that frequency. “Page” button, then number key loads the memory pages 0-9 on each band (so each band has 100 memories). Like the PL-660, the memories store frequencies only, not the mode and also not the bandwidth (despite the manual claims they do). Also differing from the manual, the selected bandwidth stays put per mode and doesn’t reset to a default setting.

Direct frequency input needs to be initated with the “Freq” button though, and in some cases (shortwave frequency <10,000kHz) you need to hit it again to enter the frequency. The D-808 has up/down buttons in addition to the main tuning knob, they are stepping through the bands in the “Fast” step width so you can pretty much always leave the tuning knob on “Slow” . Pressing these buttons longer than 3s starts the band scan. Holding each of the left side band buttons starts the “ATS” scan-and-save-to-memory automatic.

The D-808 shares the “power off” settings scheme with the Tecsuns – some functions like LW on/off, the FM band coverage and so on are set when the radio is off. These functions are labeled in orange above the corresponding buttons and I share the criticism about the color scheme, which is really hard to read in less than optimum lighting conditions. Also, some of the labels are actually “power on” functions marked in the same color, like the “METER” function on the SW band button (hit the SW button repeatedly to step through the broadcast bands) or the USB/LSB switching and key lock functions activated with the “Info” button.

Display/Backlight

Despite the size difference, readability of the display is fine on both receivers. Backlight control is fundamentally different tho: You can turn off the automatic backlight on the PL-660 but you can’t turn it permanently on, the D-808’s light button toggles between “permanently on” and off but you can’t turn off the automatic. The backlight is objectionably bright on the D-808, the upside is that it serves well as a reading light and the light reflected off your hand can illuminate the buttons sufficiently to substitute the missing button lighting.

Some random things I like:

RSSI/SNR meter

Like the PL-880 and some other Tecsun radios, it has a somewhat odd “dB over 1 microvolt”-like signal indicator. It lacks the negative figures needed to properly represent the ~S0-S3 range, it just goes from ’00’ to ’99’ and it’s strangely labeled as “dBu” but technicalities aside, it is a signal indication in 100 steps which is certainly more useful than a 5 bar indicator. According to reports, other receivers with this RSSI don’t seem to use the entire display range and end at ’75’ or less. However I can see the D-808 showing ’99’ when I’m at our airstrip and the tower transmits.

The second pair of digits is a crude calculation of receiver (not audio!) SNR, which can be useful in conjunction with the signal strength meter, e.g. for adjusting or comparing antennas and so on, and it works best with AM and FM signals.

Battery Endurance

“18650”-batteries have a very high energy density at a very low weight, and in the D-808 they meet a radio with a very moderate power consumption. As a result, the provided 2,000mAh battery powered the radio continuously for remarkable 32 hours, 14 of them with the display light on! For comparison, the heavier (and more expensive) 2,500mAh Ni-MH batteries in my PL-660 last for 24 hours only.

It seems the quality of the packaged battery is all over the place though, one user reports “have to charge every day”, another one “28 hours”. If in doubt, a Panasonic 3,400mAh battery (this is the current technical limit for 18650s, don’t fall for fake “10,000mAh” offers seen on Amazon and eBay!) should last for a long weekend even if you’re listening all day. Make sure you buy the “protected” type, the other flavor (used e.g. in electric cigarettes) doesn’t work. If you happen to be a high-performance flashlight fan, you may already have a bunch of batteries to keep the D-808 going forever.

The manual claims that the D-808 can’t be charged when it’s on but I found that’s not quite true–it sure takes much more time but I could top off a slightly discharged battery just fine.

Charging it from a USB charger or laptop USB port introduces some additional noise on AM/SW of course, trying a cheap power bank worked out much better in this regard.

A true “Walkman” for SWLs

The PL-660 fits in some big pockets only and weighs more than a pound. The D-808 has only 2/3 of the Tecsun’s size and I can stuff it conveniently into all of my jacket’s side pockets (tuning knob ahead) so the whip can stick out easily without getting into my way at all. It has at most half the weight of the Tecsun, it weighs less than my smartphone!

This is making an old dream come true for me – a full-featured “communication receiver” (well, almost) that’s “wearable”, one that allows me to enjoy hands-free and hassle-free full shortwave reception on all bands without compromises (particularly in sensitivity) when I do the boring walks the doctor prescribed!

Outsides where the noises of the digital world are gone, the D-808 presents all bands almost as filled as my dipole at home and so there’s always an interesting QSO or some overseas radio program to enjoy. To give you an idea on what I mean by “no compromises”: my companion on today’s walk was NY2PO from upstate NY (3,728mi/6,000km away) on 40m, constantly coming in with a signal allowing for convenient listening, despite the bad conditions (SFI=68 A=10).

I think this may be the first time a radio with so many features and such a high sensitivity comes in such a small package – all handheld scanners with SW and SSB were an expensive atrocity on shortwave, the late ICF-7600 was slightly bigger, less sensitive and SSB was not its strength. The only radio with even more features and similar dimensions would be the “Reuter Pocket” SDR but that might be less sensitive on a whip, it lacks the air band, it has a 1-digit battery runtime and a 4-digit price tag. The only other affordable radio that could fit that bill would be the even smaller Tecsun PL-365 SSB, but it lacks an SSB filter, it has no RDS and no air band and I’d be curious if it can match the sensitivity of the XHDATA.

Verdict

The D-808 can score in 3 bands (Air, FM (due to RDS) and AM) with its sensitivity, the PL-660 only on LW (due to the fact it actually receives something there) and by a narrow margin on shortwave. The Tecsun’s (perceived) lower noise floor, better speaker sound, better tuning and built-in attenuator is countered by a much wider choice of filters, better fine tuning control, better portability and the better battery endurance of the D-808. The latter also has a number of less important features the former lacks, on the other hand the Tecsun lacks the many quirks of the D-808. It’s up to you to weigh the advantages of each to find your personal favorite, the D-808 struggled a bit to become mine but at the end I couldn’t help enjoying this little radio a lot.

There is much room for improvement though – for example the slightly borked control of the DSP, the chuffing/tuning and AGC issues on SSB let the D-808 miss the title “most stunning cheap little radio ever” by a hair.

For me, the unique combination of size, sensitivity and selectivity is making up for the shortcomings, it certainly remains a very interesting radio and I can’t remember carrying one around that much, ever.


What a brilliant, detailed assessment of the D-808! Thank you so much for sharing this! I’m absolutely jealous of your North Sea listening location–looks to be idyllic! 

Check out the XHDATA D-808 on Amazon.co.uk (affiliate link) and AliExpress.

Recommending the Tecsun PL-880 over the Sangean ATS-909X

$
0
0

Many thanks to SWLing Post contributor, Direwolf131, who recently commented on one of the Sangean ATS-909X reviews in the Post archives.

Direwolf131 writes:

I’m a few years after Steve’s comments but I will have a go at it, at least anecdotally speaking. I’ve owned a half dozen Sangean ATS-909’s, which includes two of the 909X’s, and one super-909 from radiolabs. The 909X is the finest looking portable I have ever seen or lain hands upon, and that includes several Sony’s that I still think of as neat looking, I had the white cabinet 909X first and then the much more striking (to my eyes) black cabinet 909X after returning the first one due to rock hard buttons.

They are both extremely attractive, and exceptionally well made, especially by today’s cheap Chinese standards. I must confess that I also still find the original 909’s almost equally neat looking, though not quite sporting the same robustness of build.

The 909x’s sound wonderful on MW & FM, and its a decent performer reaching out to fairly distant FM stations. Unfortunately that is largely the best of the radio, its performance on MW & SW is best described as pathetic, and not just due to being deaf, it has a lot of noise, even when attached to the superb RF systems tuned EMF antenna. The older 909 is also to my experience substantially better then the 909X when matched up to a serious outboard antenna, such as the above EMF, I found this difference especially surprising, its not even close.

The PL-880 from Tecsun blows it away on SW and MW sensitivity, while also offering the superb advantage of genuinely ECSS tuning anything on MW & SW, you cannot decently receive any MW or SW signal via ECSS with the 909X as its SSB can only be fine tuned to 40 Hz, which is terribly disappointing, you can zero beat the little Tecsun easily. serious ECSS capability is to my mind a much more attractive option then a sync circuit, and unfortunately with the beautiful little Sangean 909X you get neither.

I do hope anyone who happens upon this pays attention, because for the money the PL-880 is far and away the better performer, in fact my little 1103 from Degen/Kaito out performs the 909X, as does my Grundig Yacht Boy-400, and my Sangean ATS-803A. Its my great hope that Sangean seriously upgrades these deficiencies in the otherwise gorgeous 909X, its circuitry is noisier than the old 909 and its not nearly not as sterling a performer hooked up to household current and a decent outboard antenna as the old 909, its 40 hz tuning SSB once a great reason to buy a 909, is no longer competitive, especially against the superb PL-880 which again is capable of excellent ECSS even by Icom R75 standards, Sangean would do well to drastically improve the SSB performance of the 909X.

I hope this helps, I liked the original review up top, but again its several years old, and the ATS-909X is now known to be clearly outclassed by the more affordable Tecsun, actually by the PL-660 to boot, I really hope Sangean addresses the issues, its such a beautiful receiver, you just want it to be as good as it looks, unfortunately it’s not!

Thank you for sharing your evaluation and comments!

The Sangean ATS-909X is an interesting radio indeed. Almost everyone loves the design, audio and overall quality of the 909X.  Yet performance reviews are somewhat polarizing: some 909X owners claim the 909X has strong performance characteristics on shortwave, while others believe it’s almost deaf. Your findings coincide with mine from the Mega Review where I pitted the ATS-909X against the Tecsun PL-880, PL-660 and Sony ICF-SW7600GR. In that review, where I relied on a whip antenna, the 909X was noticeably less sensitive than the other three competitors. Based on the premium one pays for the 909X, I was surprised.

I have learned over the years, however, that the 909X can handle larger outdoor antennas and doesn’t easily overload. Additionally, the 909X requires a fresh set of batteries for optimal performance/sensitivity. Some users have even modified the radio with a 4:1 impedance transformer–click here to read a post/comments about this mod.

I would love to see Sangean produce an updated/upgraded version of the 909X, but at this point I’m not exactly holding my breath. I’ve heard that they’re slowly pulling out of the market. Hope I’m proven wrong because I’d love to see a new shortwave set from Sangean.

Viewing all 182 articles
Browse latest View live