David - CA3DPV
My two cents...
First I've tried with a karaoke mic and a audio console
Good: I get 10W of power without effort, talking quietly
Bad: The signal transmitted is extremely low pitch (very dificult to copy).
Now I use a PC mic (purchased for a few bucks). PTT is a button installed on it.
Good thing: It's a very cheap and small desk microphone (3 USD),
Bad thing: It's a low gain mic, get 4 or 5 watt only @40m