[Elecraft] KX3: No Transmit in SSB following ATU TUNE

[Don Butler]

I've had KX3 S/N 125 for over 3 months now.  I'm still a happy camper and 
have been having a ball.  I did have issues with the KXPD3, but they were 
solved by carefully reshaping the tips of the contact screws.  But another 
issue remains:



After activating ATU TUNE my KX3 will not transmit in USB or LSB. 
BUT....Cycling the mode button to CW and then back to SSB always corrects 
the problem.  There has never been a problem on CW . just USB or LSB.   I 
don't operate digital modes so cannot say if there is a problem there. This 
glitch has been present from the beginning.  I operate primarily CW so haven't 
given it much thought to this point, especially since cycling through the 
modes has always provided a quick fix.  At first I thought it was related to 
band changes as it would occur almost every time I changed bands, but when I 
got into the NAQP SSB fray last night it became apparent that it was related 
to ATU TUNE... and I now realize that I've pretty much been running ATU TUNE 
every time I change bands.  The problem is 100% repeatable and it follows 
every ATU TUNE activation.  I'm using the MH3 mic... and am currently using 
FW 1.12/.94 .. (but had the same behavior with FWs 1.10, 1.06, and 0.99)



The typical sequence is:



  1.. band change to any band in SSB mode
  2.. run ATU TUNE
  3.. key the mic .. Ptt takes the KX3 out of receive but there is no 
transmit output
  4.. quickly cycle the mode button to CW and back to USB or LSB
  5.. everything is now fine . ptt works, and talking through the mic 
produces output.


Am I a loner with this glitch? ... or are others having similar experiences?



Don, N5LZ