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2025年1月20日 · But "aligning condenser potentiometer" has no meaning in old radio circuit lingo. At least in the USA. But yes, the common style trimmer capacitor used for IF transformers had …

2025年1月9日 · I have a 42-322 in similar shape. The only things not original about mine: 1 tube that's non-Philco, but with a neat radio service shop label, and penciled note on the chassis …

2004年9月30日 · You can orient the antenna to null the 960 station and if you tune it with an external cap and have enough Q then you might be able to add considerably more selectivity …

2025年1月27日 · Mid 1960s: The NEC and UL began to advocate for and later require polarized plugs to insure that hot and neutral were consistently oriented to reduce shock hazards in …

2025年1月31日 · So first let me say I am NOT an expert, years ago I was educated in school on TV and electronic repair on vacuum tube equipment (1975). So I have some knowledge, I am …

2025年2月4日 · The old electrolytics probably had higher ESR (equivalent series resistance) than the ones you're replacing them with and that may be enough to make residual hum a non …

2025年2月15日 · Last visit was: Mar Sat 08, 2025 10:17 pm It is currently Mar Sat 08, 2025 10:17 pm

2025年1月5日 · The radio is as Jim has said. There are several items that need to be checked to insure operation. - Are the tubes, other than the Davens 201 OR, 201a, sort of important as a …

2025年2月17日 · The radio I'm dealing with is a Zenith 7S363 console basket case and the particular issue is in the IF tube and transformer area. The original C5 (.1 MFD) and C6 (.05 …