chemotransmitter
exciter
filter
pulse modulator
radiotransmission
generator
radiotransmitter
repeater
radio
birdie
radio transmitter
peanut whistle
scaler
output signal
output
digital-to-analog converter
tuner
radio set
radio receiver
wireless
digital-analog converter
receiving set
input
retransmitter
input signal
rockcrusher
coax cable
signaling
coherer
coaxial cable
coax
driven element
multiplexer
acoustic modem
telegraph wire
buzzer
telephone wire
signaling device
telephone line
telegraph line
jammer
lunchbox
analog-to-digital converter
coupler
analog-digital converter
photochopper
digitiser
digitizer
upmodulation
antihum