[CQ-Contest] MFJ434 voice keyer woes

Jim Neiger n6tj at sbcglobal.net
Sun Oct 16 12:09:13 EDT 2005

Chuck.  I experienced the exact same problem with my MFJ and MP last March. 
Reason unknown.  Thanks for the tip on the JMP2.


Jim Neiger  N6TJ

----- Original Message ----- 
From: <KI9A at aol.com>
To: <smc at w9smc.com>
Cc: <cq-contest at contesting.com>
Sent: Sunday, October 16, 2005 8:10 AM
Subject: [CQ-Contest] MFJ434 voice keyer woes

> Hey all, while setting up for todays Illinois QSO party, I noticed my new
> mfj voice keyer was tuning the VFO on my FT1000MP Field downward. I 
> checked all
> connectors, thenm popped the hood on the MFJ. I found all jumpers int he
> correct  place, so, I figured I'd pull them one at a time until the 
> problem
> cleared.  There is a 3-position jumper called JMP2, that has a setting for 
> Yaesu &
> ICOM/Kenwood. First off, what does this do? Anyone know? I pulled the 
> jumper,
> & it stopped the VFO. Seems to work fine with no jumper installed, so, I'm
> going to use it that way.
> But, what I want to know, is what the heck does JMP2 on this thing? I 
> can't
> find any feature that is affected so far. Audio is fine, memories are
> fine....maybe it enables the mike installed on the front of the MFJ to 
> tune the  VFO
> up or down??
> Hope to see you all on the ILQP this afternoon! Work us often, we are 
> going
> to have some very dedicated op's in mobiles (with gas at almost 
> $3/gallon!),
> so  get on & make it worth their efforts!
> 73! Chuck KI9A
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