[Kenwood] TS-940S Not Receiving on CW

Tue Oct 25 20:56:09 EDT 2011

Dennis,
One other possibility is a solder bridge shorting out the filter 
connections. I encountered this
on one of my 940's a few years ago. Since the 940's are usually not 
shipped with CW filters
this could be missed in the original testing.
cheers, Paul - VA7NT
On 10/25/2011 05:38 PM, Dennis Younker NE6I wrote:
> Hi Bill,
>> Actually Ed is helping me out a little. It's me with the TS-940S problem.
> I'm going to check on the filter more closely in a day or two. Thanks for
> the suggestion on the cold solder joint. I did wiggle it around earlier but
> maybe it's worse than even that would reveal. I'll check it out more
> closely.
>> --Dennis NE6I
>> ----- Original Message -----
> From: "Bill Cromwell"<wrcromwell at gmail.com>
> To:<kenwood at mailman.qth.net>
> Sent: Tuesday, October 25, 2011 11:31 AM
> Subject: Re: [Kenwood] TS-940S Not Receiving on CW
>>>>> Message: 1
>>> Date: 2011年10月24日 18:07:11 -0700
>>> From: "Dennis Younker NE6I"<ne6i at cox.net>
>>> Subject: Re: [Kenwood] TS-940S Not Receiving on CW
>>> To:<ma.locksmith at juno.com>
>>> Cc: kenwood at mailman.qth.net
>>> Message-ID:<F4A2FF2BC01340DEB9FFF3D05EAEE8D3 at dennishome>
>>> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>>> reply-type=original
>>>>>> Works fine in AM mode. I can copy AM stations fine, and tuning into a CW
>>> signal, I can hear a carrier coming and going (without the BFO of
>>> course).
>>> In CW mode however, the receiver goes quiet (no audio) but the S-meter
>>> indicates that the unit is receiving the signal.
>>>>>> ----- Original Message -----
>>> From:<ma.locksmith at juno.com>
>>> To:<ne6i at cox.net>
>>> Sent: Monday, October 24, 2011 11:33 AM
>>> Subject: Re: [Kenwood] TS-940S Not Receiving on CW
>>>>>>>>>> What do you get if you listen on AM mode to a CW signal?
>>>>>>>> Ed
>>>> K1ZOK
>>>>>> Hi Ed,
>>>> I have a different Kenwood model than yours. When I had a similar
>> problem I tracked it down to a cold solder joint on one of the crystal
>> filter pins (CW just as yours). On mine I am able to select the filters
>> completely independent of the mode selected and it was a sure bet on the
>> filter (and it's connections). I am not familiar with the block diagram
>> of your radio to know if it is possible for that to affect yours in a
>> similar way. If your rig were mine that is the first place I would look.
>> Costs nothing but a little bit of time.
>>>> 73,
>>>> Bill KU8H
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