I've written about the DoJ "25 Cities" federal interoperability project in several Fed Files columns, but thought I would post some information here as well.
Some information on the “25 Cities Project” is available on the Internet, but much of it has not been updated in years, and may not reflect the actually current project status:
Web pages and documents available on line now do not have any frequency information available in them, but confirmation from local monitoring and some have verified frequencies for these DOJ radio systems. Here is a rundown of the cities involved in the “25 Cities” project, and what the known radio systems are. Unless noted with a CTCSS tone squelch value, all these repeaters are using P-25 digital mode with a P-25 Network Access Code or NAC of N653.
“ATL FIO” 170.4750 MHz
“BAL FIO” 170.6625 MHz
BOSTON, MA – UPDATE!
Reports from local listeners in the Boston area have reported that the “Boston FIO” channel has had very little use in recent times. The frequency was derived from a US Coast Guard channel used for natural gas terminal operations, but since the Coast Guard has started using the new P-25 “CG NET” channels, traffic on this frequency has pretty much dried up.
“BOS FIO” 165.3250 MHz
“BAPERN FIO” 167.4375 MHz, 167.9 pl–patch to BAPERN 470.7875
“BPD FIO” 158.9100 MHz
Federal agencies in the Charlotte region have access to the large Charlotte-Mecklenburgh County trunked radio system. A cache of portable 800 MHz trunked radios is provided to agencies such as DHS CBP & ICE, DEA, US Marshals Service, the Secret Service and the North Carolina Air National Guard.
“CG CMD C” 171.6875 MHz (CHICAGO COMMAND CENTRAL)
“CG CMD N” 170.8125 MHz (CHICAGO COMMAND NORTH)
“CG CMD S” 171.4375 MHz (CHICAGO COMMAND SOUTH)
“CG TAC C” 172.2125 MHz (CHICAGO TACTICAL CENTRAL)
“CG TAC N” 168.8875 MHz (CHICAGO TACTICAL NORTH)
“CG TAC S” 168.9125 MHz (CHICAGO TACTICAL SOUTH)
DALLAS/FORT WORTH, TX
“DFW EAST” 170.7250 MHz
“DFW WEST” 171.4375 MHz
DENVER, CO – UPDATE!
Originally the project described the Denver Metro area as being served by a pool of 800 MHz trunked radios programmed to operate on local public safety trunked systems. It now appears that the 25 Cities Project has opted to install 5 VHF P-25 repeaters located around the Denver metro area.
“DEN IO N” 170.6625 MHz (DENVER NORTH)
“DEN IO E” 171.9875 MHz (DENVER EAST)
“DEN IO C” 171.4375 MHz (DENVER CENTRAL)
“DEN IO S” 172.1875 MHz (DENVER SOUTH)
“DEN IO W” 167.2625 MHz (DENVER WEST)
DETROIT, MI - UPDATE!
In the first version of the 25 Cities Project, federal interoperability in both the Detroit area and Michigan statewide was supported through the Michigan Public Safety Communications System (MPSCS). However, new information indicates that Detroit will also be getting a stand-alone VHF repeater for federal interoperability communications.
“DET FIO” 170.5625 MHz
NORFOLK/ HAMPTON ROADS, VA
The Hampton Roads/Norfolk metropolitan area is using a single VHF repeater for federal interop use. Listeners have reported both clear and encrypted traffic on this channel, as well as weekly check-ins between the various agencies utilizing this system.
“HRN FIO” 165.7000 MHz
HONOLULU, HI – UPDATE!
In addition to having access to the local public-safety radio systems, federal agencies in Honolulu have several VHF repeaters for federal interoperability. The “LE-4” repeater is part of the NTIA nationwide interoperability channels available to both federal and non-federal agencies.
“HNL FIO” 170.6250 MHz
“HNL FIO 2” 168.9875 MHz
“LE-4” 168.1125 MHz, N68F
“HNL FIRE” 154.280 MHz, D364
Two VHF repeaters in the Houston area are now available for federal agency interoperability. These frequencies have also been referred to by FBI units as “L1” and “L2”, which are the channel numbers in the FBI radios that were originally testing these repeaters. The channel names are short for COMMAND and PATCH.
“HOU CMD” 170.7250 MHz
“HOU PAT” 171.4375 MHz
A single VHF repeater serves the Jacksonville area federal interoperability needs. This repeater can be patched to other area pubic safety radio systems if needed. The US Navy facilities in Jacksonville and Mayport have control stations that access this repeater.
“JAX FIO” 171.4375 MHz
LOS ANGELES, CA – UPDATE!
Two standalone VHF P-25 repeaters in the Los Angeles area service the 25 Cities Project:
“LA FIO 1” 163.1000 MHz
“LA FIO 2” 172.4125 MHz
In addition to these federal repeaters, the Los Angeles Regional Tactical Communications System (LARTCS) has been providing interoperability between federal, state and local agencies. The federal “25 Cities” frequencies listed above do not appear to be part of the LARTCS. Here is a rundown of the LARTCS frequencies that can be patched together:
California National Guard 036.5000 MHz
HEAR 155.3400 MHz
NALEMARS 155.4750 MHz, 156.7 PL
Coast Guard Channel 23A 157.1750 MHz
LA INTEROP D 159.0300 MHz
LA INTEROP C 159.1800 MHz
Federal UHF I/O 406.8000 MHz, 156.7 PL
LACSO MA-1 483.5875 MHz, 186.2 PL
LACSO MA-2 484.0875 MHz, 186.2 PL
LACSO MA-3 483.7875 MHz, 186.2 PL
LACSO MA-4 484.1375 MHz, 186.2 PL
LACSO MA-5 484.0625 MHz, 186.2 PL
I-CALL 866.0125 MHz, 156.7 PL
CLEMARS 8 868.5125 MHz, 156.7 PL
“MIA FIO” 171.4375 MHz
MINNEAPOLIS/ST. PAUL, MN – UPDATE!
The original rundown of cities for the 25 Cities Project did not include the Minneapolis / St. Paul Metro area. Since then, the Twin Cities have apparently been elevated to be among the 25 “high-risk” cities (Sharp Fed Files readers will note that this brings the total number of cities to 26!). Both of these repeaters were heard on the air during the Republican Convention in late 2008:
“FEDCOM MP” 170.6250 MHz
“FEDCOM SP” 171.6125 MHz
NEW ORLEANS, LA
“NOLA FIO” 171.4375 MHz
NEW YORK CITY, NY – UPDATE!
The Big Apple has three repeaters available as a federal interoperability system. The VHF repeaters are using P-25 digital and the UHF repeater is analog. Also, I was recently advised of another VHF P-25 channel that might be linked to these. The frequency 173.8625 MHz, N653 was heard active, but unknown if this is a permanent part of the NYC Federal Interoperability nets.
“NYC FIO” 167.7875 MHz
“NYC FIO2” 171.1750 MHz
“NYC FIO” 414.7500 MHz, 82.5 PL
“PH FIO” 171.4375 MHz
Federal interoperability communications in Phoenix can use multiple radio systems. One is the Inter-Agency Radio System, or IARS. This is a series of VHF and UHF repeaters tied together to link agencies with dissimilar radio bands. Federal agencies also have radio consoles and portable radios on the Phoenix Regional Wireless Network (PWRN) and the Mesa Trunked Open Arizona Network (TOPAZ).
Federal agencies operating in the Portland area have access to the local 800 MHz public safety trunking systems. There are talk groups allocated for the various agencies sue, as well as control stations and radios available. The federal IWN trunked system is operational in and around the Portland metro area and there is some interconnection available between the IWN P-25 trunked system and the Portland area 800 MHz radio systems.
SAN DIEGO, CA
San Diego area federal agencies can make use of the San Diego City and County 800 MHz trunked systems with control station and portable radio access. Communications dispatchers also have the ability to patch from their trunked systems to some federal “mutual aid” or “multi-agency” channels. These channels are not directly related to the “25 Cities Project”, but are part of the DHS Border Patrol P-25 network throughout southern California. Listeners have reported patches between these federal frequencies and other agencies:
“MA-4 SP” 166.9125 MHz, N245
“MA-4 PM” 167.3750 MHz, N249
“MA-4 DM” 167.5250 MHz, N247
“MA-4 MCC” 167.7250 MHz, N244
“MA-4 CP” 170.8375 MHz, N248
“MA-1 CP” 171.1750 MHz, N362
“MA-1 PM” 172.2875 MHz, N363
“MA-1 SP” 172.4500 MHz, N148
SAN FRANCISCO, CA – UPDATE!
The Bay Area recently received some upgrades to their federal interoperability system. There now appear to be 2 VHF and 2 UHF federal repeaters in both analog and P-25 digital:
“SF FED-V” 171.6127 MHz
“SF FED-U” 410.4125 MHz
“SF MA V-A” 168.7625 MHz, 167.9 pl
“SF MA U-A” 409.0125 MHz, 167.9 pl
In addition to these federal repeaters, the interoperability system includes these state and nationwide public safety channels:
“CELMARS 7” / “LLAW” 045.8600 MHz, 156.7 pl
“SF MA T-A” 483.1375 MHz, 156.7 pl
“8TAC94” 851.0125 MHz, 156.7 pl / 866.0125 MHz, 156.7 pl
The Seattle / Tacoma, WA metropolitan areas are served with several large 800 MHz trunked radio systems. Federal interoperability in these cities relies on control stations and portable radios that can access these trunked systems. It also involves patches to these systems as well as the federal IWN trunked system.
“STL CALL” 171.4375 MHz
“STL TAC” 171.6875 MHz
“TAM FIO” 171.6875 MHz
“DCIO 1” 159.1500 MHz, MPD Citywide Patch
“DCIO 2” 168.8750 MHz
In addition to the above interoperability channels, there were plans for three additional repeaters, but they do not appear to be on the air at the time I compiled this list. Can anyone in the DC area confirm any activity on these frequencies?
“DCIO 2 N” 173.7500 MHz
“DCIO 2 S” 168.0875 MHz
“DCIO 2 W” 166.7875 MHz