Re: SX-117 noise limiter behavior
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A blanker normally reduces pulse type peaks such as spark plug type pulses. Someone else will need to describe a noise limiter. Bob W4JFA?
So, guys, where is the formal non-partisan definition of.. "noise blanker" "noise limiter" Is there a defined difference between them ? and do the terms define? an intent or a specific circuit? Sorry to interfere but my poor education did not address this; at least not that I remember. ¡»å´Ç²Ô ? I had hoped that someone who has actually seen and used an SX-117 would respond.? I've only been restoring receivers for 40 years or so, but over that time I've learned that you can save a lot of time by consulting with someone else who owns the same radio when observing an odd behavior.? You might be surprised how many times "they all do that" is the undesirable but true answer.? As I said, I have not dug into this particular problem yet.? What I do know is that the SX-117 does not have a "noise blanker" as seen in later or more sophisticated receivers like the Drake R4C.? It is described as a noise limiter.? This particular SX-117 has been completely restored with all new tubes and many capacitors replaced, as well as a few out-of-tolerance resistors.
Spraying old switch sections with anything is a really bad idea.? All switches in this unit have been carefully cleaned using De-Oxit and Q tips and tooth picks to apply the cleaner in small amounts where needed.?? ?,_
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don??? va3drl
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Bob