Post subject: Poor reception on Hallicrafters S20R
Posted: Apr Fri 27, 2012 9:44 am
Joined: May Thu 26, 2011 5:58 am Posts: 803 Location: Sterling- A city in Northern Virginia about 20 miles outside of D.C
I recently acquired this receiver and have finished recapping it along with replacing several resistors that were out of spec. I followed the alignment precedures laid out in the schematic and got a strong signal from my generator. Strange thing is that I get very poor reception from everything else including my AM transmitter. I have a good antenna hooked up to it and all the tubes have been checked out and are fine. If I hook up an antenna directly to the grid cap on the 6K8 the reception gets better but only marginally. Any thoughts or advice are greatly appreciated.
_________________ "No man goes before his time, unless the boss leaves early"
Post subject: Re: Poor reception on Hallicrafters S20R
Posted: Apr Fri 27, 2012 12:05 pm
Joined: Jan Thu 01, 1970 1:00 am Posts: 13656 Location: Utica, NY 13502 (USA)
455 kHz is only used to align the IF transformers. Now you need to align the RF section using other frequencies for each band. Those frequencies and the adjustments involved are specified in the alignment procedure outlined in the S-20R service information.