[Elecraft] K3 Transmit Issue

K5WA k5wa at comcast.net
Sat Jul 3 23:31:03 EDT 2021


Rob,

 

Hopefully, you'll get better answers from others but I'm going to guess that
you meant a 2nd (SUB) receiver and not a "second channel".  I have installed
three 2nd receivers in the K3s I used to own and you need to make sure all
the coax cables are well seated into their proper ports.  It is very easy to
think it is engaged but it just isn't inserted quite enough.  You also need
to make sure the center pins of those cable are not bent if someone has
pressed too hard while misaligned.  I'll assume you also have the upgraded
SYNTH boards (one for the main RX and another for the SUB) as well because
those cables need to be fully seated in the correct ports.  It is easy to
look at the installation picture up-side-down and get the cables backwards.
Double check those.  The second receiver also has a row of pins underneath
it that can be misaligned since it is almost a blind insertion.  Make sure
those pins are correctly engaged.  You might need a dental mirror type
device to actually see it under there.  If you also have the KAT3 tuner,
that's another cable that needs to be checked to ensure it is seated
completely and not missing entirely.

 

I'm sure you'll find the issue after some poking around looking for loose
connections.

 

Good luck,

 

Bob K5WA  

 

 

Message: 9

Date: Sat, 3 Jul 2021 12:34:42 -0400

From: Toast <mantz at toast.net <mailto:mantz at toast.net> >

To: elecraft at mailman.qth.net <mailto:elecraft at mailman.qth.net> 

Subject: [Elecraft] K3 Transmit Issue

Message-ID: <11D23480-3DB4-445B-B92D-A8540F0709ED at toast.net
<mailto:11D23480-3DB4-445B-B92D-A8540F0709ED at toast.net> >

Content-Type: text/plain; charset=us-ascii

 

I recently installed the second channel and general coverage receive options
on my k3 with the 100w transmitter.   I have double checked the settings but
get now transmit power.

 

Any ideas on what the issue is?

 

Rob Mantz

NR4B 

 



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