[Kenwood] Jumping Twin

[mark kenward]

Another thought.......

These rigs will change frequency(transmit) if you change back switch from 
separate to transceive.  If I remember correctly, about a kHz.

Perhaps a bad connection in this area?

Mark
K8VF



----- Original Message ----- 
From: "peter A Markavage" <manualman at juno.com>
To: <kenwood at mailman.qth.net>
Sent: Thursday, December 23, 2004 2:13 AM
Subject: Re: [Kenwood] Jumping Twin


> Mike:
> You might want to share what bands does it jump in frequency; happens on
> CW or SSB (upper or lower); can you hear it in another receiver (or
> matching receiver if you have it); have you hung a counter on any of the
> oscillator outputs; checked all the voltages coming off the power supply
> section to be sure they're still in spec. I would also check all the
> screws holding down the boards to be sure of a good ground connection.
> Many of these rigs, and also the 520 and 830 series, were notorious for
> having the mounting screws that hold the boards work loose causing an
> intermittent connection between board ground and chassis ground. I guess
> Kenwood tried to save money by not using star or shakeproof washers on
> their mounting hardware.
>
> Pete, wa2cwa
>
> On Wed, 22 Dec 2004 21:48:16 -0500 Mike Steussy - AE4R <ae4r at erols.com>
> writes:
>> Ahoy!  My Kenwood T-599D transmitter works fine, but it has a small
>> problem. I've had several reports that my transmitted signal jumps
>> in
>> frequency.  Apparently it doesn't jump much and is only mildly
>> annoying
>> to the folks I'm sending to.  But I'd like to fix it and generate a
>> nice
>> steady signal.  Members who can help, please advise the cause and
>> recommended cure.
>>
>> Thanks, 73, & happy holidays!
>> Mike Steussy  AE4R
>> Vienna VA
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