Circuitry re-assembled onto a single circuit board

A project log for HF Short loop antennas: managing expectations

Make a portable loop antenna that works well on 40 meters, then make it autotune.

Andrew MitzAndrew Mitz 12/11/2019 at 19:310 Comments

The circuitry has been rebuilt onto a single board assembly.  This version has two latching relays to short link coupling of the coupling transformers when the antenna is in use (up to 100 W operation). Hopefully, this will protect the log amplifier and the clock board.

I have a video of the prototype in operation, but it is too large at the moment. I will resize it and post it later.