[Elecraft] K2 No Side Tone After Firmware Upgrade

[cstoverva at aol.com]

 Also, this K2 appears to have all of the rev. B mods completed.

 


 

 

-----Original Message-----
From: cstoverva at aol.com
To: elecraft at mailman.qth.net
Sent: Sun, Mar 14, 2010 1:58 pm
Subject: [Elecraft] K2 No Side Tone After Firmware Upgrade



 I just aquired my second K2.  It's and older one with a 3 digit serial number 
that I purchased used.

Plans are to build and install a KDSP2.  In preparation for that, I upgraded 
from firmware MCU2.01 / IOC1.02 to MCU2.04 / IOC1.09.
Now I've lost the transmit sidetone.  Toggling between sidetone source U8-4 and 
U6-25 makes no difference.  Replacing the old firmware restores the sidetone.

What am I missing?  Is there a mod to the control board I need to make?  I 
haven't been able to locate any info.  Any ideas?

Thanks.

Chuck K4QS

 


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