[Johnson] impedance transformer

[Glen Zook]

The microphone transformer goes between pin 1 and
ground.  Push to talk goes between pin 2 and ground. 
Thus, there is no problem!

Think about it!  Unless the transformer is mistakenly
wired to the wrong pin it is not in the push to talk
circuit.

Glen, K9STH


--- John Lawson <jpl15 at panix.com> wrote:

As well as a high voltage for the relay - which will
kill a mike/transformer/outboard gear - don't ask me
how I know this...  ;{}
 
Be CARFEFUL with the PTT on Johnson Valiants and
500's, etc...  check the book and/or schematic to
determine what voltage is accross the PTT line when
it's 'open circuit'.









Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com