Sounds like the same thing I found on an MFJ keyer and MP a few years ago
while on a dxpedition, where I had to trace thru the schematic to figure out
what jumpers did what.
I think one incorrect jumper was connected to the MP mike connector pin
that was intended to jog the frequency from a button on the Yaesu hand mike.
Chet, N8RA
> Message: 1
> Date: Sun, 16 Oct 2005 09:09:13 -0700
> From: "Jim Neiger" <n6tj@sbcglobal.net>
> Subject: Re: [CQ-Contest] MFJ434 voice keyer woes
> To: <KI9A@aol.com>, <smc@w9smc.com>
> Cc: cq-contest@contesting.com
> Message-ID: <006901c5d26b$f36dcc40$6400a8c0@D46LGD61>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Chuck. I experienced the exact same problem with my MFJ and MP last
> March.
> Reason unknown. Thanks for the tip on the JMP2.
>
> 73
>
> Jim Neiger N6TJ
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