[ct-user] [YCCC] Help with CT & IC756PROIII internal DVK

[Jim Reisert AD1C]

At 10:53 PM 10/23/2006, Mike McCarthy, W1NR wrote:

>See page 104 of the ProIII manual for an external voice keyer interface you
>can build that plugs into the microphone connector.  I built one into a
>small box that also interfaces my Heil Proset and footswitch to the
>microphone connector.  Just be sure to use a blocking capacitor (1uF
>tantalum) in the microphone line as there is 8VDC there.  Bought what I
>needed at You-Do-It in Needham, MA.  You "might" be able to get the switches
>and box at Rat Shack.
>
>I don't believe there is a way to control the internal DVK through software.

CT did support, at one time, a DVK keying interface that would 
operate as N2GC asked.

You'd have to consult the CT manual for details on the LPT port pins 
involved, and a sample circuit for keying a NelTek DVK.

73 - Jim AD1C


-- 
Jim Reisert AD1C, 7 Charlemont Court, North Chelmsford, MA 01863
USA +978-251-9933, <jjreisert at alum.mit.edu>, http://www.ad1c.us