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"Bill Turner" wrote in message ... On Wed, 08 Dec 2004 10:02:26 -0700, BH wrote: How stable do they need to be in an old radio where components values can vary, sometimes by quite a bit, and the radio will still perform just fine? __________________________________________________ _______ That depends partly on the circuit design and partly on how much any other components in that circuit may have drifted. Without that information, the question can not be answered. -- Bill W6WRT The question is pretty much answered by the fact that most antique radios used 20% carbon resistors. Many of these original resistors have aged upwards of 100% over time, and the radios often still run "just fine". The manufacturers saw no need to use high tolorence components, and most of the circuits are self biasing and self compensating to some degree. Vintage radios aren't rocket science. Good NOS carbon comps from reputable manufacturers are fine. Pete k1zjh |
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