Pionier type U2 Polish radio - UK Vintage Radio Repair and Restoration Discussion Forum

vinrads · 24th Mar 2019, 11:08 am

I have the radio working, looks like the cores have moved in the IF cans. I can't seem to find the IF freq on the net, any body know?

Mick.

cmjones01 · 24th Mar 2019, 1:51 pm

According to https://pl.m.wikipedia.org/wiki/Pion...adioodbiornik) its long wave band finishes at 429kHz and medium wave starts at 525kHz, so the IF is probably half way between those two points or somewhere nearby - I'd start with 465kHz and see how it tracks.

Chris

cmjones01 · 24th Mar 2019, 1:53 pm

Just found another page by searching for 'Pionier U2 dane techniczne' which states 465kHz is the IF:
https://www.fonar.com.pl/audio/katalog/pionier_u2.htm

Chris

vinrads · 24th Mar 2019, 2:03 pm

Cheers for that Chris , I have it at 470 khz but noticed that one slug bottoms out, just checked the 200pf capacitors across the coils they seem to be ok I think I need to have a play with a pre set cap. Mick.

24th Mar 2019, 11:08 am	#1
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,754	Pionier type U2 Polish radio I have the radio working, looks like the cores have moved in the IF cans. I can't seem to find the IF freq on the net, any body know? Mick.

24th Mar 2019, 1:51 pm	#2
cmjones01 Nonode Join Date: Oct 2008 Location: Warsaw, Poland and Cambridge, UK Posts: 2,676	Re: Pionier type u2 Polish radio According to https://pl.m.wikipedia.org/wiki/Pion...adioodbiornik) its long wave band finishes at 429kHz and medium wave starts at 525kHz, so the IF is probably half way between those two points or somewhere nearby - I'd start with 465kHz and see how it tracks. Chris __________________ What's going on in the workshop? http://martin-jones.com/

24th Mar 2019, 1:53 pm	#3
cmjones01 Nonode Join Date: Oct 2008 Location: Warsaw, Poland and Cambridge, UK Posts: 2,676	Re: Pionier type u2 Polish radio Just found another page by searching for 'Pionier U2 dane techniczne' which states 465kHz is the IF: https://www.fonar.com.pl/audio/katalog/pionier_u2.htm Chris __________________ What's going on in the workshop? http://martin-jones.com/

24th Mar 2019, 2:03 pm	#4
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,754	Re: Pionier type u2 Polish radio Cheers for that Chris , I have it at 470 khz but noticed that one slug bottoms out, just checked the 200pf capacitors across the coils they seem to be ok I think I need to have a play with a pre set cap. Mick.