Got a Galaxy Saturn base on the desk (still waiting on cap order to finish up Osaka).
Issue:
FM audio (modulation) is low to almost non existent on both PEP and average. I know FM isn't supposed to swing, I should have said my locals can barely hear me on FM at all, they say I have a great FM carrier but almost no modulation on FM.
AM audio (modulation) fine on both PEP and average. PEP shows 53w, average shows about 25w.
SSB audio (modulation) fine on PEP but low on average. PEP shows about 40w, average shows barely 10w and not very sensitive to every syllable, even on PEP SSB output is not very sensitive to every syllable.
Recapped entire radio (last of my 10uf and 100uf caps).
Replaced Passthrough regulator.
Replaced AF regulator.
Replaced modulation transistor (beside AF regulator).
Replaced TR32.
Adjusted bias.
Tuned output.
Complete alignment.
Cleaned all controls.
Note:
In order to even barely hear any modulation when transmitting on FM, the mic has to be cranked wide open, the power mic has to be cranked wide open and the FM deviation adjustment has to be cranked wide open. Whereas on SSB and AM it sounds great (according to reports on the air) with mic gain at 12 o'clock (straight up), power mic set at 5 (goes from 1 to 10).
All frequencies lined up great.
All voltages (buffers) lined up great.
Vco lined up great.
Oscillators (both PLL and carrier) lined up great.
RF stage lined up great.
Bias adjusted great.
Receive lined up great.
Any ideas?
Issue:
FM audio (modulation) is low to almost non existent on both PEP and average. I know FM isn't supposed to swing, I should have said my locals can barely hear me on FM at all, they say I have a great FM carrier but almost no modulation on FM.
AM audio (modulation) fine on both PEP and average. PEP shows 53w, average shows about 25w.
SSB audio (modulation) fine on PEP but low on average. PEP shows about 40w, average shows barely 10w and not very sensitive to every syllable, even on PEP SSB output is not very sensitive to every syllable.
Recapped entire radio (last of my 10uf and 100uf caps).
Replaced Passthrough regulator.
Replaced AF regulator.
Replaced modulation transistor (beside AF regulator).
Replaced TR32.
Adjusted bias.
Tuned output.
Complete alignment.
Cleaned all controls.
Note:
In order to even barely hear any modulation when transmitting on FM, the mic has to be cranked wide open, the power mic has to be cranked wide open and the FM deviation adjustment has to be cranked wide open. Whereas on SSB and AM it sounds great (according to reports on the air) with mic gain at 12 o'clock (straight up), power mic set at 5 (goes from 1 to 10).
All frequencies lined up great.
All voltages (buffers) lined up great.
Vco lined up great.
Oscillators (both PLL and carrier) lined up great.
RF stage lined up great.
Bias adjusted great.
Receive lined up great.
Any ideas?