Thread: VHF or UHF?
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Old 15th Nov 2017, 10:21 pm   #21
Radio Wrangler
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Default Re: VHF or UHF?

"Supersonic" in those days meant pitched above the range of hearing

A heterodyne was (and is) a beat note created by mixing two signals together.

So a superhet beats a local oscillator with a signal to create a signal on a new frequency above the audible frequency range.

David
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