On Dec 15, 2:17*pm, Sébastien MEDARD wrote:


Do you tune it, or not? Is there a small loop inside or not?


Yes for both. The cap is down at the bottom corner, and
I use a separate coupling loop because I'm feeding coax
to the radio. The 42 inch per side loop uses 5 turns on
the main loop. The coupling loop is on the inside, and
maybe 36 or so inches out from center.
Sounds like you are in good shape for caps.
That 500-500 would be good. I'd put a small mini switch
between the two gangs to be able to cut or add the
second gang. That's what I do on mine anyway.
I solder the switches right to the tabs on the cap.
I also have a handful of fixed caps to add if I want to
drop further down into longwave. I don't use them that
often so I just clip them on if needed.
I think my 16 inch round loop has about 12 turns if
I remember right.. It also uses a inner coupling loop.
For me, those loops are mainly for AM-BC, but I do
wander down and listen to the air beacons from time
to time. And the big one covers 160 meters, so I
use it for that sometimes.