A Small modification to my EMTECH ZM-2 ATU

With the current bad conditions the need to run 80m during the day for SOTA activations has caused me to visit antenna options that would allow me to run 80 with a “minimum” amount of wire.

My normal SOTA / WWFF antenna is an end fed of around 25m with a 6m counterpoise, this is then matched to 50 ohm using an external L Match. This configuration is fine on 40m and up, but is too close to a quarter wave length on 80m to match well. Continue reading