s-band
Noun
Meaning
s-band (plural s-bands)
(physics) An ultrahigh radio frequency, one within the range of 1,550 to 5,200 MHz.
Examples
A large radome for an S-band AN/APS-20 search radar was fitted underneath the fuselage and additional internal fuel tanks were added for longer range, with the provision for additional underwing fuel tanks.
A high-gain S-band antenna was used for long-distance communications on the lunar flights.
An S-band communications antenna is mounted on the rim of the basket, and a radar antenna for surface studies extends out of the vessel on a mast.
Communications were accomplished through the high- and low-gain antennas, via dual S-band traveling wave tube amplifiers, operating at 10 or 20 watts, for transmission.
Each transceiver was 8 watts and transmitted data across the S-band using 2110 MHz for the uplink from Earth and 2292 MHz for the downlink to Earth with the Deep Space Network tracking the signal.
By observing phase changes in the S-band radio signal, measurements of the atmosphere could be made.