Hey Mike, That is pretty much what drove me crazy. I had used this ht as a remote before...and it worked! Put away for years, then recently pulled it out to use.
There was a mod I did that removed a resistor that isolated the ptt circuit and mike in. Couldn't get the thing to key to save my life. Reconnected that resistor and keyed fine, but lost the mic audio. Turns out it was just that. Moved the ptt line and everything was happy :-) Finally figured it out when I was getting a little audio through...even with the mic audio line disconnected! :-D txns and 73, Robert --- In [email protected], "Mike - W5JR (f/k/a N5FL)" <[EMAIL PROTECTED]> wrote: > > Robert, if you are using the external mic connector to key the radio, > you will have to "key" the mic line by using a resistor to ground > versus directly to ground. The radio goes into TX mode when current > is pulled through the mic line. If you are paralleling the internal > PTT switch, this does not apply. You can search for one of the sites > with the old ACC controller info, and there is an appnote on hooking > the 2-, 3-, and 4- radios to their units that shows PTT and mic audio > connections. ACC used the FC-1 board to interface the controller > logic to the radio. > > > Mike - w5jr - via arrl.net - Milton, GA >
