What is the SINCGARS frequency range?

What is the SINCGARS frequency range?

• A. 30-87.975 megahertz
• B. 108-180 megahertz
• C. 3-30 gigahertz
• D. 2-8 gigahertz

Answer: (A)

The system operates in the VHF FM band, specifically from 30 to 87.975 MHz. This range is chosen because it supports reliable line-of-sight communications with reasonably sized antennas and enables effective frequency hopping to resist jamming and interception. The other frequency ranges fall outside what SINCGARS uses: higher microwave bands (3–30 GHz and 2–8 GHz) are not part of SINCGARS, and while there is VHF activity above 87.975 MHz, SINCGARS specifically uses the 30–87.975 MHz span for its secure FHSS operation.

The system operates in the VHF FM band, specifically from 30 to 87.975 MHz. This range is chosen because it supports reliable line-of-sight communications with reasonably sized antennas and enables effective frequency hopping to resist jamming and interception. The other frequency ranges fall outside what SINCGARS uses: higher microwave bands (3–30 GHz and 2–8 GHz) are not part of SINCGARS, and while there is VHF activity above 87.975 MHz, SINCGARS specifically uses the 30–87.975 MHz span for its secure FHSS operation.