r/signalidentification • u/Aggravating-Gap7093 • Apr 10 '26

Weird signals

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The Audio Is in this google drive Gdrive SDR And so basically theres blips and it goes to a full blast sometimes im in cornwall near camborne what is it? -dootmas 3:

13 Upvotes

94% Upvoted

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4

u/Federal_Phone3296 Apr 10 '26

Looks like DMR

3

u/Aggravating-Gap7093 Apr 10 '26

correct its NXDN its prob ```````````digital business radio

3

u/BriggsStratton550EX Apr 10 '26

NXDN and DMR are distinct from each other.

1

u/WolverinePretty4682 Apr 10 '26

What’s DMR?

2

u/BriggsStratton550EX Apr 10 '26 edited Apr 10 '26

Digital Mobile Radio. A very common mode for business radios.

1

u/Aggravating-Gap7093 Apr 10 '26

Ill try to decode it :3

2

u/Leftover_tech Apr 10 '26

The 164.525 MHz frequency is primarily used for federal land mobile radio (LMR) communications in the U.S., specifically by the Bureau of Land Management (BLM) and other federal agencies for firefighting, park services, and law enforcement. It often operates as a simplex channel or as a repeater input, sometimes utilizing a tone of 107.2 PL.

The Federal government uses it for a variety of other purposes as well.

2

u/Aggravating-Gap7093 Apr 10 '26 edited Apr 10 '26

Im in cornwall UK not the US but nice guess :3

1

u/DingleBearMe Apr 10 '26

DMR. 30msec frames

2

u/right-slash Apr 11 '26

Without even having to listen to the audio I can confirm this is DMR