[CQ-Contest] How to switch out a DVS-2 for low-tech 2 radio operating

[David Clemons]

	A few weeks ago, I asked the reflector if anyone knew which lead 
or leads being opened would cause a DVS-2 to stop operating, the purpose of 
which was to add this voice keyer to my low-tech switch box which guarantees
that only one radio can transmit audio at a time.  (This problem probably 
arises only for those people who do not have a sound card in their 
computer and who have 2 radios of different manufacture.)  No one knew 
the answer last time, but it seemed that I was not the only one interested 
in doing this.  So, after doing some low-tech research, I have found the 
answer.

	The DVS-2 uses a 7 pin din connector.  I bought two of these 
connectors at a local electronic supply house (not Radio Shack - they 
don't carry them), and made an "extension" cord using twisted pair wire.  
(The connectors require very small wire, so small in fact, that I could 
barely see what I was doing even with my glasses.)  I  presume that the 
7 pin din connectors that I bought are standard, but just in case they are 
not, then do the following:

	1.) Look at the wire connection side of the female connector.
	    (This is the side where you will solder the wires.)  Hold the
	    connector so that the notch is at the bottom (6 o'clock position).

        2.) Starting at the notch, go clockwise around the pins.  On my 
	    connector, the order of pin numbers was 7, 3, 5, 2, 4, 1, 6.
	    You can completely disable the DVS-2 if you open the line at 
	    pin 7.  I do not know which 2 pins are unused, as pin 7 was 
            my second guess!  (Pin 6, the other one next to the notch is 
	    used, but disabling it will only kill your audio while allowing 
	    the transceiver vox to trip on and off - which I interpret as 
	    having a signal on the air, even though no audio can be copied.)

	I hope this helps everyone else who was interested.

73, Dave Clemons K1VUT


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