Stop on station circuit including center channel detector

Stop-on-station method and apparatus

Structure for wireless communication in an electromagnetically s

Sub-miniature radio telephone decoder

Sub-miniature tone decoder

Sub-miniature tone encoder with automatic number identification

Superheterodyne receiver frequency tracking circuit

Superheterodyne receiver frequency tracking circuit

Superheterodyne receiver of scanning type with indicator means t

Supervisory device for an optoelectronic switching network

Suppressed-fundamental frequency three-way predistorter

Switchable bandpass filter for a multiband tuner

Switchable signal source module for use with cable television co

Switchable wide band receiver front end for a multiband...

Switched network telephone subscriber distribution system

Switching circuit for a satellite broadcasting converter capable

Switching control apparatus for tuning system

Switching filter module for dynamic multi-channel selection

Symmetrically clamped fiber optic receiver

Synchronization tracking in pulse position modulation receiver