thorosaurus
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If you're using commercial radios with voice inversion boards, can you use just any repeater, or does it have to have the options boards as well?
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If using voice inversion, do repeaters have to have inversion boards, too?
- Thread starter thorosaurus
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No, it just gables the voice band so it's transparent to repeaters.
thorosaurus
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I thought so, but I wasn't sure. So basically the repeater will just repeat the garbled signal, and the guy on the other end, as long as he has an inversion board, can still unscramble it?
Yes. An analog repeater just repeats out the other frequency a very slightly degraded version of what it receives. With a good, full-quieting FM signal on the repeater receive channel, the output signal should be an almost perfect reproduction of what is received, scrambled or not. If the signal is invert-scrambled and full quieting and the scramble settings are the same on the receiving radio, it should be easily unscrambled by the radio the guy on the other end.
Same as if he were speaking French.
prcguy
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For me its a tossup, I can sometimes make out a few words listening to inversion scrambling and about the same with French......
Not necessarily. In a colder climate installing the repeater inverted may help keep it warmer by reversing the cooling airflow.
Upside down MTR2000 repeater.....
That is the result of being arround all that high power RF.
That is the result of being arround all that high power RF.
prcguy
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thorosaurus
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That's kind of an interesting analogy. The scrambler is kind of like a computer generated pig latin that's automatically translated by another computer on the other side.
I had an old BC560XLT in my truck in high school. I was driving around with some girl when the local PD went secure using Transcrypt 460 rolling code. She asked if cops have to "learn that language". 
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