[TowerTalk] 40M FCP

[Jeff Kinzli N6GQ]

I'm thinking of trying a 40m vertical using the K2AV FCP folded
counterpoise. In the material I read it talks about tuning the isolation
transformer aound the desired operating frequency. I see dimensions for the
isolation transformer internals, but they are for 160m. I also see
commercial isolation transformers for 80 and 160m, but none for 40m.

I'd be interested in construction specifics of a FCP isolation transformer
for 40m - thoughts?

Thanks,

Jeff N6GQ