SINCGARS is a Combat Net Radio (CNR)

Combat-net radio

In telecommunication, a combat-net radio is a radio operating in a network that provides a half-duplex circuit and uses either a single radio frequency or a discrete set of radio frequencies when in a frequency hopping mode....

 currently used by U.S. and allied military forces. The radios, which handle voice and data communications, are designed to be reliable, secure and easily maintained. Vehicle-mount, backpack, airborne, and handheld form factors are available.

SINCGARS uses 25 kHz channels in the VHF

Very high frequency

Very high frequency is the radio frequency range from 30 MHz to 300 MHz. Frequencies immediately below VHF are denoted High frequency , and the next higher frequencies are known as Ultra high frequency...

 FM band, from 30 to 87.975 MHz. It has single-frequency and frequency hopping modes.