Analog trunk scanner picking up digital system?

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cnmsales

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Hello all. I have a pro-2051. Today at work I brought my radio in cause its so slow on sundays. The place I work uses a Project 25 Phase I (FDMA) APCO-25 Common Air Interface Exclusive system. While scanning i turned on the signal stalker function. When someone keys up on our radios the scanner detects it, it of course only makes a static sound on the radio. So is the freqs its picking up control freqs? I checked the list and the freqs arent listed in the database as a control channel. It is in the same range. Also note it only pickis up when the radio is keyed up in range of the scanner.
 

kikito

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The scanner picks it up the because it's still a transmission like any other. It's detecting the carrier even if it can't demodulate the audio.
 

mdulrich

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If the scanner is picking up the "noise" when a radio is being keyed, you are hearing the voice channel. The control channel would be there constantly.

Mike
 
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