November 2000
Intermediate to advanced
336 pages
7h 43m
English
Content preview from Radio and Electronics Cookbook
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55
Radio-frequency mixing explained
Confused?
Audio mixers (as used in recording studios and radio broadcast stations) are used to add or ‘balance’ the signals from various sources such as microphones, CD players, etc. These have nothing whatsoever to do with radio-frequency (RF) mixers, and should never be confused with them.
RF mixers and beat frequencies
Instead of adding signals (as in the audio mixer), the RF mixer multiples them together. As you might expect, this has an entirely different effect. The two signals entering ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.