New to p25 phase 2

[Mph621]

Hello I live in Gloucester Va seams we just went to p25 phase 2 what ever that is? Does anyone know what if anything I can buy to listen?

 

[Whiskey3JMC]

Are you sure about that? If your county went Phase-II the RRDB doesn't reflect this

Gloucester, County of​

Peninsula Regional Radio System Project 25 Phase I

Sheriff and Fire use this trunked system.

With that said as things are listed today and given the fact that Dutton may be within range of two (maybe three) towers on the Gloucester Simulcast I'd recommend a Uniden SDS100 or SDS200 to overcome simulcast distortion you may face

 

[jtwalker]

APCO Project 25 - The RadioReference Wiki

wiki.radioreference.com

This explains what it is, as well as lists scanners that can decode phase 2.

 

[u2brent]

Scanner Models

• GRE Scanners
• Radio Shack Scanners
• Uniden Scanners
• Whistler Scanners

You can check these links for compatibility.

 

[chief21]

Hello I live in Gloucester Va seams we just went to p25 phase 2 what ever that is? Does anyone know what if anything I can buy to listen?

Before you purchase something new to monitor the phase 2 system, you may want to confirm that the agency you wish to monitor has not also enabled encryption, which seems to be more and more common with agencies switching to phase 2.

 

[tvengr]

If your scanner is capable of decoding P25 Phase 2, programming a system as P25 covers both Phase 1 and Phase 2. P25 Phase 2 is TDMA (Time Division Multiple Access). Each frequency has 2 audio channels (Slots) and can carry 2 separate conversations at the same time. It increases the capacity of a radio system without needing to add more frequencies. Phase 2 talkgroups will have a "T" (TDMA) in the Mode column of the database. Phase 1 talkgroups will have a "D". "DE" and "TE" talkgroups are fully encrypted and cannot be received by any scanner. "De and "Te" talkgroups are encrypted part of the time. The Gloucester County site actually consists of 4 subsites all transmitting on the same frequency at the same time. The signals from the subsites arrive at your scanner at slightly different times which can degrade its ability to properly decode the control channel. That is known as Simulcast Distortion and results in missed transmissions and garbled audio. Simulcast distortion is location dependent. If you are close to one of the subsites, the signal can override the out of phase interference from the other subsites. The Uniden SDS100 and SDS200 and the future SDS150 and SDS250 are the only scanners designed to overcome the simulcast issue. Any other scanner may or may not work depending upon your location at the time.

1 (1)

004 (4)

Gloucester Simulcast

Gloucester

851.175

851.6125

852.5375c

853.100c

853.4375c

853.8875c