On Sun, Dec 25, 2005 at 04:54:13PM +0000, K0HB wrote:
> Santa left me a new MFJ-434 voice keyer to help with contesting vocals.
>
> Has anyone here used that with CT or other software, and built the interface
> shown in the MFJ literature?
Here's one idea:
http://www.qsl.net/ae0q/contest/dvk_trlog.htm
> MFJ shows two resistors on each 'input' wire --- a 470-ohm at the computer
> end of the wire and a 1K in series with that on the circuit board at the gate
> of the switch transistor. What's the point of separating these series
> transistors? It requires hiding a glob of 470-ohm resistors inside the Dsub
> at the computer end of the cable. Why not just put single 1.5K resistor on
> the circuit board?
>
> 73, de Hans, K0HB
> --
> ><{{{{*> http://www.home.earthlink.net/~k0hb
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--
Kenneth E. Harker WM5R
kenharker@kenharker.com
http://www.kenharker.com/
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