- pointing error
- polarization diplexer
- polarization isolation
- polarization purity
- propagation delay
- programmed servosystem
- pseudoelliptic filter
- radio service
- radio star
- rain gauge
- reference station
- reflector antenna
- repeater
- request channel
- RF sensor
- shaped reflector
- shift
- space segment
- station
- subreflector
- superrefraction
- TDMA terminal
- tracking accuracy