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.