[CQ-Contest] MFJ-432 Voice keyer questions...troubles
k1ky at bellsouth.net
Mon Nov 2 11:33:26 EST 1998
KI9A at aol.com wrote:
> I have an MFJ 432 voice keyer I bought a few years ago that I am having RF
> troubles with.
I believe you will find that there is a critical design flaw where they
have put an inductor (L6) in the ground return of the mic circuit. I
have two of these units and could not make them work unless running them
from an external 12 volt battery. If I used my equipment power, all
sorts of nasty things would happen to the audio.
Simply solder a piece of wire across L6.
If you are interested in computer interface, you can find my solutions
to that in the e-mail archives.
Let me know if this solves your problem.
Thomas M. Delker - K1KY CFO#395 - Smyrna / Gallatin / Short Mtn. TN
A.R.R.L. District Emergency Coordinator - Tennessee District #4
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