jwb wrote:
looking for a mic diagram for a heathkit sb-104
thanks jack

It isn't a real toughie, it is a 2 pin connector with
a shield. The shield is the return for the mic and
PTT, one pin is the mike, the other is the PTT.

Which is which? I don't remember anymore, but it is
trivial to figure it out. Turn the radio on, turn
the Mic/CW gain control fully CCW, VOX off, USB, and
set the radio to high power. Using a dummy load, short
a pin to the case, and if it goes "clunk", it is the PTT.
The other one is the mic.

You're a ham, right?

-Chuck