Safety alert and locating system

Safety shutdown system for a wdm fiber optic communications...

Sagnac interferometer based secure communication system

Same-frequency satellite terrestrial radio broadcast

Sample rate converter

Sample timing and carrier frequency estimation circuit for...

Sampled data subsampling apparatus

Sampling of electronic signals using optical pulses

Sampling system for radio frequency receiver

Satellite apparatus with omnidirectional and manually...

Satellite assisted push-to-send radioterminal systems and...

Satellite based acknowledge-back paging system

Satellite based demand assigned multiple access protocol for...

Satellite based earth fixed cell tracking method

Satellite based simulcast paging system

Satellite beam monitoring

Satellite beam steering reference using terrestrial beam...

Satellite beam-pointing error correction in digital...

Satellite broadcast receiver systems for use with an fm...

Satellite broadcast signal receiving system