Choice of 455 kc and 10,7 mc as IF frequencies

[Will White]

Just an idle thought I had, as I was browsing my radio books: why are so
many, and at one time nearly all, radio receivers designed to use IF
frequencies of 455 kc and/or 10.7 mc? There must be some fundamental
electronic principle that applies to this choice, I can't imagine these
IFs are only a matter of convention and interchangeability of parts. So,
how were these frequencies chosen, and why have they remained the
overwhelming favorites?
--
Will White, KD7BFX

to reply, please click this link mailto:wcw at asu.uswest.net

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