SDR Police Receiving

[Dovebar1]

Hi, Is a sdr module able to decode police
digital signals on the 700 Mhz band?
I ask this because I know that using certain programs, certain digital signals can be decoded.

I know there are simple dongles and there are more expensive modules that can receive signals from Ghz to HF.

Any info on this would be highly appreciated.

Thank you, Jim.

 

[JimmyJet727]

As always, it depends. Please provide as much info as possible on the system you wish to decode. Preferably a link to the system from RR.

 

[jtwalker]

Maybe, unless it can’t. Like it would not be able to decode Post Falls ID police.

 

[boatbod]

SDR software can generally decode P25 and DMR digital radio systems, but in many cases agencies are securing their digital voice transmissions with encryption that you are not going to be able to work around.

 

[wtp]

the reason you can't hear the sheriff,

28000

6d60

DE

Kootenai SO 1

Sheriff 1 Dispatch

the 28000 is the talkgroup number in regular number format (decimal)
the 6d60 is the same in base 16 (for geeks and motorola stuff)
the D means phase 1 P25
the E means encryption. that is where you get stopped.
it is a capital E and that means fulltime encryption.
you could still hear the fire department.

 

[saioke]

Unfortunately the only real way to listen to encrypted radio conversations is to get a job in that field. If the traffic is unencrypted, you'll be able to listen yes, but no SDR software will decrypt encryption (Except OP25 on Linux, but you need a decryption key and well, you'll never find one of those either and even if you could, it would be illegal).