[amsat-bb] DUV using the Kenwood TS-2000x

Lisa R. Nelson lisa50469 at gmail.com
Tue Sep 11 21:20:53 UTC 2018


Love my new radio, BUT it seems the audio output on the ACC2 connector
pin 3 (MANO) has some filtering on it.  It's also only present when the
squelch is open.  On my V71A, there's a signal called "PR9 Output 9600
(bps) repeat signal" which is always present regardless of squelch etc.,
and works very well for tapping the audio for DUV detection.

I did discover that I could get a EYE diagram (kinda) after turning the
'Lo/Width' knob all the way down.  So I believe that means that the
radio is filtering the MANO output which it shouldn't....

Has anyone modified the  TS-2000 to tap into the audio before it is
filtered?  I hear this was a practice for a long time.  Just assumed
Kenwood would have provided a better output for work like this. 

Then again I easily could be overlooking something simple... if so,
please tell me!  Attached is the EYE diagram.

Thanks,

Lisa AK7WS



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