K2 serial #05622 completed

[wb2srf]

Just completed building my K2 Serial #05622 with NB and SSB options
installed
it went together smoothly, the problems was some distortion caused by the
built in speaker. Bending the frame slightly solved the problem for now.
Just received a replacement speaker thanks to Elecraft customer service
and will replace the speaker if it acts up.
 
Wired up a cheap 600 Ohm dynamic CB microphone that I picked up at the
Sussex NJ hamfest and  found that it has good audio and plenty of punch
with the compressor set to 2::1.
 
Be careful of used header jumpers. I used three header jumpers to
configure the microphone, these came from a old computer board that was
stripped for parts. I found that I had no output when talking into the
mic in the SSB mode. Traced the problem to an open jumper at pin 1.
Lesson learned look carefully at the inside of the jumper and found that
the contact was bent over on one side.

Loss of sidetone problem:
Beware of secondary menu settings I must have accidentally changed the ST
L sidetone source from U8-4 to U26-25.  Thanks to Don Brown for answering
Steve Banks post back on 4/19/02 The email reflector is a good tool for
resolving common problems.
 
73,
Bob Johansen WB2SRF
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Ron D'Eau Claire-2]

Bob, WB2SRF wrote:

Just completed building my K2 Serial #05622 with NB and SSB options
installed it went together smoothly, the problems was some distortion caused
by the built in speaker. Bending the frame slightly solved the problem for
now. Just received a replacement speaker thanks to Elecraft customer service
and will replace the speaker if it acts up.

Wired up a cheap 600 Ohm dynamic CB microphone that I picked up at the
Sussex NJ hamfest and  found that it has good audio and plenty of punch with
the compressor set to 2::1.

--------------------------------

Bob, my old S/N 1289 (2000 vintage) had a bent speaker frame. That happens
in shipment, apparently, because the metal of the frame is too soft for the
weight of the big magnet on it when the box it's in is banged very hard.
After straightening mine back then it's been FB.

Be sure to check your SSB output on 10 meters. That's the band where the
audio level from the mic is the most critical. Mics that easily produce full
output on 40 meters often can't make anywhere near full output on 10. That's
because the overall transmitter gain is lower on the higher bands, requiring
more audio from the mic to make full power.

Ron AC7AC

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com