UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

crestavega · 18th Jul 2017, 10:57 pm

Yes. I am using the TUNE function for Tx which sounds like just a full carrier. I have a dummy connected indeed. power level does not seem to make a difference.

May be a problem with drive. there is a test meter position (pre-drive - position 1) which cuts PA function and shows the RF Drive voltage, to enable the peaking of the drive signal:
I dont seem to see any needle twitch at all on this, so maybe there is not enough drive to make the PA work.

18th Jul 2017, 10:57 pm	#48
crestavega Pentode Join Date: Apr 2014 Location: Kirkwall, Orkney, UK. Posts: 165	Re: Sailor T128 Marine Transmitter. Yes. I am using the TUNE function for Tx which sounds like just a full carrier. I have a dummy connected indeed. power level does not seem to make a difference. May be a problem with drive. there is a test meter position (pre-drive - position 1) which cuts PA function and shows the RF Drive voltage, to enable the peaking of the drive signal: I dont seem to see any needle twitch at all on this, so maybe there is not enough drive to make the PA work.