low-frequency channel

fixed frequency channel

audio-frequency channel

video-frequency (vision) channel

high frequency channel

radio-frequency channel

pulse repetition frequency (PRF) / pulse-repetition frequency

low frequency (LF)

very low frequency (VLF) radio

low-pulse repetition frequency

low-pulse repetition frequency radar

low-pulse repetition frequency waveform

very low frequency (VLF)

low-RCS target / low-radar-cross-section target

low flying aircraft / low-flying aircraft

low-flying, low-speed drone

channel of command

channel routes

drainage channel

duplex / two-way channel

half-duplex channel

searched channel

simplex channel

single-channel ground and airborne radio system (SINCGARS) radio

quick-fire channel

beam channel

in the period in which the communications channel has been open

fire channel

fire-support channel

information collection channel

nonnuclear fire request channel

nuclear fire request channel

reconnaissance fire channel