Transmission system and repeater stations therefor

Transmitter equalization method and apparatus

Transmitting and reproducing system having improved noise reduct

Transversal equalizer

Transversal filter for parabolic phase equalization

Transversal filter prime sequence frequency synthesizer

Transversal frequency filter

Transversal type automatic equalizer

Transversal type automatic phase and amplitude equalizer

Trapped energy piezoelectric filter

Tunable electrical filter network

Tunable surface wave device resonator

Two-wire resistance bridges for private line circuits

Ultrafast adaptive digital modem

Uniform surface acoustic wave transducer configuration having im

Variable band pass filter circuit

Variable bandwidth pass-band filter

Variable bandwidth tunable directional filter

Variable capacitance element controllable by a D.C. voltage

Variable directional coupler having movable coupling lines