[Johnson] impedance transformer

[John Lawson]

On Fri, 14 Apr 2006, Glen Zook wrote:

>
> The push to talk goes between pin 2 and ground.


   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'.


    Cheers

John  KB6SCO