[NLRS] PTT Switch

[W0ZQ at aol.com]

In a message dated 5/13/2005 7:59:25 P.M. Central Standard Time,  
jbrown at luminet.net writes:

I am  looking for ideas for a simple PTT switch to use between 2
transverters. I  am using an Icom 706 MkIIG and DEM transverters. I tried
a simple AV switch  but as soon as I move the switch to a different
position the tranverter  goes into transmit. Any ideas would be
appreciated.

Jim  N0WE




Jim, not sure what your doing ..... do you have one IF rig and two  
transverters ?   If so, do you have an A/B switch for the IF  line AND a second A/B 
switch for the PTT lines ?    Often  those "A/B" switches ground the non-selected 
port .... if your PTT line  is "ground-to-transmit", that could be the 
problem.     You  can check for this with an ohm meter.      A fix would  be to find 
another switch, or modify the one you have, so that it floats when  its not 
deselected.   
 
73, Jon
W0ZQ