Civil Air Patrol Digital Transmissions on 148.125Mhz

Eng8492

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Joined
Feb 18, 2013
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148.125 is listed as a civil air patrol frequency.

I noticed digital transmissions on this frequency starting a little over a week ago. Most of the time the transmitter keys up and it sounds like there is a burst of a fixed data and that's it. Occasionally I pickup a much longer transmission that has the familiar sound of frequency shift keying like old Flex protocol paging towers. This stuff is being auto recorded while I am work...and I am scanning a lot of channels. So I can't listen to the pattern and timing of activity to decide if it's voice data or something else.

I curious and would like to find out what civil air patrol is using this channel for, and what protocol is being used.
 

dave3825

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ecps92

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148.125 is listed as a civil air patrol frequency.

I noticed digital transmissions on this frequency starting a little over a week ago. Most of the time the transmitter keys up and it sounds like there is a burst of a fixed data and that's it. Occasionally I pickup a much longer transmission that has the familiar sound of frequency shift keying like old Flex protocol paging towers. This stuff is being auto recorded while I am work...and I am scanning a lot of channels. So I can't listen to the pattern and timing of activity to decide if it's voice data or something else.

I curious and would like to find out what civil air patrol is using this channel for, and what protocol is being used.
CAP has been mixed mode (Analog and P25) for many years and has been (couple of years now) moving to more P25 than analog
148.1250 and 148.1500 are their primary two repeater pairs


CAP missions vary from training, to support to state agencies.
Both Maine and NH use the CAP for Fire Patrols (Forests)

What NAC would help determine which Repeater they are using as each Repeater has it's own unique PL and NAC
 
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