radio signals
Airwave-carried information
Radio signals are electromagnetic waves used to transmit information wirelessly through the air or space.
They operate across a range of frequencies and carry everything from broadcast programming to cellular data to communications between spacecraft and Earth.
The term often appears in contexts involving detection or interference: We're picking up radio signals from an unknown source.
The mountains blocked the radio signals.
Radio frequency spectrum
- antennaBroadcast signal receiver
- FMCarrier wave frequency variation
- AMPre-midday designation
- transmissionSending of information
frequency · station · tuning · reception · shortwave · longwave · bandwidth · modulation
Signal-emitting device
- receiverOne who accepts transmission
- antennaBroadcast signal receiver
- transistorSemiconductor signal switch
- amplifierSignal-strengthening electronic device
modulation · demodulation · circuitry · oscillator · tuner · capacitor · resistor · inductor
Short-range wireless protocol
- Wi-FiWireless network standard
- cellularComposed of small units
- GPSSatellite-based location technology
- satelliteOrbiting celestial body
microwave · infrared · NFC · Zigbee · cordless · mobile · hotspot · 4G
Dot-dash alphabet system
- SOSMorse distress code
- distress callUrgent plea for aid
- beaconGuiding light source
- walkie-talkiePortable handheld radio transceiver
dispatch · two-way · transmission · relay · intercept · eavesdrop · scramble · decode
Spatial repetition interval
- frequencyRate of recurrence
- amplitudeMaximum oscillation displacement
- ionosphereCharged upper atmospheric layer
- atmosphereGaseous layer around planets
reflection · refraction · diffraction · attenuation · interference · static · noise · fade
airwaves
Radio frequency spectrum
transmission · frequency · station · tuning · reception · shortwave · longwave · bandwidth · modulation · amplitude
transmitter
Signal-emitting device
- receiverOne who accepts transmission
- antennaBroadcast signal receiver
- transistorSemiconductor signal switch
amplifier · modulation · demodulation · circuitry · oscillator · tuner · capacitor · resistor · inductor · analog
Bluetooth
Short-range wireless protocol
satellite · microwave · infrared · NFC · Zigbee · cordless · mobile · hotspot · 4G · 5G
morse code
Dot-dash alphabet system
- SOSMorse distress code
- distress callUrgent plea for aid
- beaconGuiding light source
walkie-talkie · dispatch · two-way · transmission · relay · intercept · eavesdrop · scramble · decode · encrypt
wavelength
Spatial repetition interval
- frequencyRate of recurrence
- amplitudeMaximum oscillation displacement
- ionosphereCharged upper atmospheric layer
atmosphere · reflection · refraction · diffraction · attenuation · interference · static · noise · fade · skip
- signalingsignal fires, signal flags, signal lamps, signal towers, semaphore
- radio astronomyinterferometry, antennas, dish, dishes, dish antenna
- radiocrystal set, AM, FM, news broadcast, AM/FM
- space explorationrockets, Saturn V, satellites, mission, Falcon Heavy
- telecommunicationscell phone, cellphone, cellular network, telephone calls, antennas
- global connectionsflights, cables, trade routes, shipping lanes, air travel
radio, signals, radios, radioed, radius, radioing, radiogram, radiography, radiograms