Interoperability Channels

The Federal Communications Commission (FCC) has designated several frequencies as primary status for interoperable communications within Very High Frequency (VHF) and Ultra High Frequency (UHF). These frequencies can be used on a non-routine basis for interoperable communications between any local or state entity. Additionally, these channels can be used across interstate borders with neighboring public safety jurisdictions. 

Very High Frequency (VHF) High Band (150-174 MHz)
151.1375 base/mobile	VTAC 1
154.4525 base/mobile	VTAC 2
155.7525 base/mobile	VCALL
158.7375 base/mobile	VTAC 3
159.4725 base/mobile	VTAC 4

Ultra High Frequency (UHF) High Band (450-470 MHz)
453.2125 base/mobile	UCALLa
458.2125 base/mobile	UCALL
453.4625 base/mobile	UTAC 1a
458.4625 base/mobile	UTAC 1
453.7125 base/mobile	UTAC 2a
458.7125 mobile	UTAC 2
453.8625 base/mobile	UTAC 3a
458.8625 mobile	UTAC 3