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Old 3rd Dec 2018, 11:54 pm   #141
John M1JWR
Pentode
 
Join Date: Nov 2018
Location: Carlisle, Cumbria, UK.
Posts: 244
Default Re: Cybernet PTBM121D4X problems

hopefully ive got it near enough right, the results are as follows all on am
basically tiny tweaks on sig gen around the basic frequency given until it peaks
on radio, when adjustment is made use the fine control until no more improvement can be got.
results are with fine on its lowest, i have assumed anti clockwise position and
hi signal is around 2 oclock on fine control.
dont seem to get it any better than the following
ch30 lo 26.855 lo sig s7 hi sig 9 to +30
ch20 mid 27.205 lo sig between s7.5 and s8 and hi sig s9 to +30
ch10 hi 27.525 lo sig s7.5 and hi sig s9 to +30
i did a test with it as there is a kind of tone on ssb for its squelch issue as
i can peak it at s5 on ssb the squelch mutes it at s4 and below, when i get it
to s5 only a slight turn on squelch knob will mute it.
also took note of power consumption on psu with tone on and radio in rx
fm uses 285ma am uses 290ma and ssb 327ma
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