Re: SX-110 2nd IF Circuit Design
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The SX-42 schematic shows a 7H7 as the third IF, printed on the diagram. ? 73 ¨C Steve, KW4H ? Hello n7qmm25 and others YES; Depending on font etc and goobers in printing C and G look quite similar Let¡¯s just say the C ?that I see in Dachis was a poor print of a G ?or my eyes are really tired so the second tube is REALLY a? 6SG7. that agrees with most and just now I am reading ??James¡¯s ¡sx-42 repair ?which lists?? ¡.edited
6SK7 - 1st IF
6SG7 - 2nd IF
6H6 - 2nd detector / Noise Limiter
7H7 (two) - FM Limiters? ¡¡¡ Now ?I just looked at the BAMA schematic ?again and see that the 7H7¡¯s are called ¡°Limiters¡± [for the FM] and don¡¯t see any sign of a ¡°3rd IF¡± ¡But ¡ Dachis ?says ?????¡°7H7 3rd IF Amp ¡°
Osterman ?says ?¡°7H7 IF Amp ¡° ¡ Beginning not to believe the gurus. Don VA3DRL?
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