electronic converter
radiotransmission
baseband
Nyquist frequency
cycloconverter
low-noise block downconverter
discriminator
inverter
transmitter
upconversion
microphone
radiotelephony
radiotelephone
wireless telephone
analog-to-digital converter
filter
tripler
radio
digitiser
carrier
digitizer
analog-digital converter
tone dialing
signalling
radiotelecommunication
digital-to-analog converter
digital-analog converter
downconversion
converter
ringdown
psophometer
squawker
repeater
out-of-band signaling
input signal
input
stopband
modulation
attenuator
spacer
videophone
block upconverter
numbers station
waveband
radiotransmitter
acoustic modem
scanner
spread spectrum communication
radio-frequency spectrum
radio spectrum