Project 25 Technology Information Group

Monday, January 25, 2021

Project 25 Technology Information Group

PTIG Publishes Updated P25 Trunking Systems List May 2019

The Project 25 Technology Interest Group (PTIG) has published an updated P25 Trunking Systems List. There are currently 1017 P25 Trunking Systems identified for inclusion on the list. The list covers known systems in the US, Canada, Australia, New Zealand, and the UK. The list is organized by State and Nation. Thanks to Ken Brown for his research efforts to update this list.  Please send any additions/corrections to Steve Nichols This email address is being protected from spambots. You need JavaScript enabled to view it.


The full list can be downloaded using the link below:

P25 Trunking Systems List May 2019


There were 194 New P25 Trunking Systems Identified since the list was last published in 2017. Other major trends include a strong migration from P25 Phase 1 to P25 Phase 2 Systems. P25 Phase 1 Systems are down from 728 systems to 652 Systems while Phase 2 systems are up from 188 to 364 known systems. In addition, 93 P25 Systems have been merged or consolidated into larger Regional or State-wide P25 systems and are no longer listed as stand-alone systems. The net total with consolidations removed is up 101 systems from the 2017 list.

P25 Conventional Systems are found on a separate list on the PTIG website. There are 1334 Conventional Systems on that list. The grand total of P25 Systems both Conventional and Trunking is 2351.

P25 trunking List Changes 2017 2019

The P25 Trunking System List Includes System Name, P25 Phase 1 or P25 Phase 2, Primary User designation, Statewide System Designation, and the Frequency Band in use.

Public Safety remains the primary user type with DoD and Federal Agencies being the other primary user Groups. Additional P25 systems were recognized for Public Works, Utilities, Corrections (non Federal), Business, Airport/Transportation, and Universities. There are 37 Statewide P25 Trunking Systems recognized.

P25 Trunking User Type Chart

Frequency Bands in use remain dominated by 800 MHz, 700 MHz and UHF LO (380-420 MHz).

P25 Trunking Systems Frequency Bands





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