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#1
February 13th 06, 07:06 AM
posted to rec.radio.amateur.equipment
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CB mic wiring
On 2006-02-11, Ken C wrote:
Well, NASA uses roger beep with its astronauts Actually NASA used "quindar tones" which are in-band signalling to activate ground transmitters. Those beeps were removed by a notch filter and never made it into the uplink. -- Ben Jackson http://www.ben.com/ |
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