173.7875 P25 Phase 2 Control Channel

nd5y

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Joined
Dec 19, 2002
Messages
8,388
Location
Wichita Falls, TX
How do you spot p25 control channels?
It depends on what scanner/receiver you are using. Normally you do a band search in analog mode and it will stop on the control channel (or any other signal that is on the air at the time). You can tell a P25 control channel by the sound. After you find it you can analyze it to see what system it is.
 

ecps92

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Joined
Jul 8, 2002
Messages
10,820
Location
Taxachusetts
That one has Been around since atleast 2016, but never really Identified.
$302 does Point to Customs, but a NAC alone is not a positive Identification
That one Freq is generally seen in use by Customs, ICE and BP in different regions
The UID is in the range seen before for CBP, ... keep listening and see if you hear anything else to ID
such as "Sector" or call signs..
I went through some of my recordings and most of the audio was ENC or was not decoded properly. I did catch this short clip of someone doing a radio check. Their reply was ENC.

 

Oakland_Tower

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Joined
Nov 28, 2009
Messages
377
Location
S.F. Bay Area
Heard testing on site 67, Mt Tam, 173.7875 around 1:20 local yesterday afternoon. "System test" heard on talk group 107 from radio id 6048998. There was another unit in there too, but did not get the radio ID.
 

daniel18522

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Premium Subscriber
Joined
Dec 23, 2016
Messages
21
Location
Contra Costa County CA
TG 7155 popped up today on 172.2375, site 79. "Respond Transport, east gate"

TG 1 is definitely the most active with the majority of audio ENC. Been monitoring for a few weeks now.

TG 1 "Any available response, transport needed, back gate."
TG 1 "Lane 2, 454 vehicles, zero alarms."
TG 1 "I have a (Inaudible) for an Oakland seaport please." Response ENC "2811 Thank you"
 
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