Nationwide Public Safety Interoperability

From HFUnderground

Revision as of 13:55, 25 January 2019

This is a work in progress as part of the VHF/UHF radio subpages.

Law enforcement, fire/EMS, medical and general public safety interoperability frequencies. Most states, regions and even cities will have additional frequencies or dedicated talkgroups on their trunking systems. Some areas include provisions to patch trunking systems to analog repeaters on the interop frequencies below.

CTCSS or PL tone for public safety interop frequencies is 156.7 Hz. This is the recommended tone for repeater output or simplex purposes. Repeater input tone is 136.5 Hz unless otherwise specified. Many users will use carrier squelch (CSQ) receive and just transmit 156.7 Hz. 155.160 MHz (National SAR common) default CTCSS is 127.3 Hz. Some agencies will use these frequencies for talkaround or simplex purposes either without a CTCSS tone or with a non-standard tone. Digital voice standard NAC is $293.

Federal/Non-Federal interop frequencies have a standard analog FM CTCSS of 167.9 Hz. In P25 digital voice mode the default NAC is 68F. Various agencies will use different CTCSS tones, no CTCSS tone, different NAC codes or the default $293 NAC code for Project 25 digital voice.

VHF low band VHF-low

• 39.4600 MHz - LLAW1 - Law Enforcement (simplex or as repeater output paired with 45.8600 MHz, optional CTCSS tone 156.7 Hz)
• 39.4800 MHz - LFIRE1 - Fire (simplex or as repeater output paired with 45.8800 MHz, optional CTCSS tone 156.7 Hz)
• 45.8600 MHz - LLAW2 - Law Enforcement (simplex or as repeater output paired with 39.4600 MHz, optional CTCSS tone 156.7 Hz)
• 45.8800 MHz - LFIRE2 - Fire (simplex or as repeater output paired with 39.4800 MHz, optional CTCSS tone 156.7 Hz)

VHF high band VHF band

• 155.7525 MHz - VCALL10 - Calling, simplex only (156.7 Hz CTCSS)
• 151.1375 MHz - VTAC11/VTAC36 - Tac 1, simplex 156.7 Hz, repeater 136.5 Hz paired with 159.4725
• 154.4525 MHz - VTAC12/VTAC37 - Tac 2, simplex 156.7 Hz, repeater 136.5 Hz paired with 158.7375
• 158.7375 MHz - VTAC13/VTAC38 - Tac 3, simplex 156.7 Hz, repeater 136.5 Hz paired with 159.4725
• 159.4725 MHz - VTAC14/VTAC39 - Tac 4, simplex 156.7 Hz, repeater 136.5 Hz paired with 151.1375
• 161.8500 MHz - VTAC17D/VTAC17 - Tac 5 - simplex 156.7 Hz, repeater 136.5 Hz paired with 157.2500
• 159.4725 MHz - VTAC35D/VTAC35 - Tac 6 - simplex 156.7 Hz, repeater 136.5 Hz paired with 158.7375
• 158.7375 MHz - VTAC36D/VTAC36 - Tac 7 - simplex 156.7 Hz, repeater 136.5 Hz paired with 154.4525
• 155.1600 MHz - NATSAR - Search and Rescue - simplex 127.3 Hz or 156.7 Hz (CSQ recommended)
• 155.3400 MHz - HEAR340/VMED28 - Ambulance to Hospital/Hospital to Hospital, medical interop
• 155.3475 MHz - VMED29 - Medical interop (secondary)
• 154.2800 MHz - VFIRE21 - Fire Interop
• 154.2650 MHz - VFIRE22 - Fire Interop
• 154.2950 MHz - VFIRE23 - Fire Interop
• 154.2725 MHz - VFIRE24 - Fire Interop
• 154.2875 MHz - VFIRE25 - Fire Interop
• 154.3025 MHz - VFIRE26 - Fire Interop
• 155.3700 MHz - INTERCITY Law Enforcement Point-to-Point Interop
• 155.4750 MHz - VLAW31 - Nationwide Law Enforcement Interop (primary)
• 155.4825 MHz - VLAW32 - Nationwide Law Enforcement Interop (secondary)

UHF band

• 453.2125 MHz - UCALL40D/UCALL40 - Calling, simplex or repeater paired with 458.2125 MHz (156.7 Hz CTCSS)
• 453.4625 MHz - UTAC41D/UTAC41 - Tac 1, simplex or repeater paired with 458.4625 MHz (156.7 Hz CTCSS)
• 453.7125 MHz - UTAC42D/UTAC42 - Tac 2, simplex or repeater paired with 458.7125 MHz (156.7 Hz CTCSS)
• 453.8625 MHz - UTAC43D/UTAC43 - Tac 3, simplex or repeater paired with 458.8625 MHz (156.7 Hz CTCSS)

800 MHz band

• 851.0125 MHz - 8CALL90D/8CALL90 - Calling, simplex or repeater (input -45 MHz 806.0125 MHz) both with 156.7 Hz CTCSS
• 851.5125 MHz - 8TAC91D/8TAC91 - Tac 1, simplex or repeater (input -45 MHz 806.5125 MHz) both with 156.7 Hz CTCSS
• 852.0125 MHz - 8TAC92D/8TAC92 - Tac 2, simplex or repeater (input -45 MHz 807.0125 MHz) both with 156.7 Hz CTCSS
• 852.5125 MHz - 8TAC93D/8TAC93 - Tac 3, simplex or repeater (input -45 MHz 807.5125 MHz) both with 156.7 Hz CTCSS
• 853.0125 MHz - 8TAC94D/8TAC94 - Tac 4, simplex or repeater (input -45 MHz 807.5125 MHz) both with 156.7 Hz CTCSS

Federal and Non-Federal Interop Frequencies

Allocated by NTIA, not the FCC. VHF frequencies in the 162-174 MHz VHF high federal government band, UHF frequencies in the 406-420 MHz UHF federal government band.