This may seem like a dumb question, but... I am trying to enable the 'Mute' function on my Mohawk. I have a good but nonetheless 'repro' manual. Both the schematic and the drawing of the reap panel show pin 6 for mute and 1 for ground (rear octal plug) . I assume that shorting these two pins together will mute the receiver. Doesn't work that way. Any ideas. Thanks. Bill / K8DXX