Hi Again All,
Well, to-day I could have SWORN that some demon had taken possession of the PTO
in my T-4X transmitter, & that it was sent to this earth with the express
purpose of taunting me...!
I mentioned before that last week I re-soldered a visibly bad connection of the
33-pfd. temperature compensating capacitor to the board of my PTO, and
that---so far!---it appeared to be the proverbial "silver bullet" in fixing the
"warbling". Well, this morning---at the very moment that I was seriously
considering taking the "4-Line" on a road trip to the cottage to test the PTO
"in the field"---the frequency suddenly jumped a coupla KHz, and was
raspy-sounding...!
Oh no, here we go again! ("Why do the gods taunt me so...?!").
Turns out---I think!---that I was monitoring the T-4X with the function switch
in the "Tune" position. By wiggling that switch ever-so-slightly, I could make
the frequency jump a prescribed amount of KHz----exactly the amount that I get
when switching the mode switch to Phone.
I wonder if a dirty mode switch may have contributed to my initial confusion in
this whole matter...?
The testing continues...
~73~ de Eddy VE3CUI - VE3XZ
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