Which are the three highest frequency ranges used in Naval communications?

Which are the three highest frequency ranges used in Naval communications?

• A. UHF, SHF, EHF
• B. VHF, UHF, SHF
• C. L-band, S-band, C-band
• D. LEO, MEO, GEO

Answer: (A)

In naval communications, higher frequency bands provide wider bandwidth and higher data rates, but they also require clearer line-of-sight and are more sensitive to atmospheric conditions. The three highest frequency ranges listed are UHF, SHF, and EHF. UHF runs roughly from 300 MHz to 3 GHz and supports many line-of-sight links as well as some satellite communications. SHF covers about 3 to 30 GHz, enabling microwave links and many high-capacity transmissions used for tactical data and satellite downlinks. EHF spans roughly 30 to 300 GHz, offering very high data rates over short to moderate distances but with stricter propagation and deployment requirements. The other options include bands that lie lower in frequency or refer to orbital classifications rather than frequency bands, so they don’t represent the three highest ranges.

In naval communications, higher frequency bands provide wider bandwidth and higher data rates, but they also require clearer line-of-sight and are more sensitive to atmospheric conditions. The three highest frequency ranges listed are UHF, SHF, and EHF. UHF runs roughly from 300 MHz to 3 GHz and supports many line-of-sight links as well as some satellite communications. SHF covers about 3 to 30 GHz, enabling microwave links and many high-capacity transmissions used for tactical data and satellite downlinks. EHF spans roughly 30 to 300 GHz, offering very high data rates over short to moderate distances but with stricter propagation and deployment requirements. The other options include bands that lie lower in frequency or refer to orbital classifications rather than frequency bands, so they don’t represent the three highest ranges.