I am on page 46 of the K2 build instructions.
I am unable to here the side tone with either headphones or a speaker.
Using a DMM and a stereo 3.5mm connector I validated that the J2
connector on the RF board has good connections. I also checked that the
tip and ring are not shorted to ground. When I power cycle the radio I
hear a slight audio pop which indicates that amp is sending a signal to
the headphones.
I have gone into the STL menu and toggled the U6-26 and U8-4 setting.
With the STL in the 200+ range I am still not hearing any side tone.
U8 voltages all look good. The other functions so far all appear to be
checking out properly.
Any suggestions for what to do next or where to investigate?
Thanks, JH
--
John Hoaglun
NG0R - EN25
http://www.hoaglun.com
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