Programmable channel selecting apparatus
Programmable controller with fiber optic input/output module
Programmable electronic device
Programmable modulation index for transponder
Programmable radio
Programmable television receiver controllers
Programming method and/or equipment for audio or video appliance
Programming-on-demand cable system and method
Proportional digital control for radio frequency synthesizers
Providing channel filtering in an automatic frequency...
Public alert and advisory systems
Pulse code modulation of laser pulse tail
Push-button operated electrical power source for an optical comm