short waves
Small ocean undulations
Short waves are radio waves with wavelengths roughly between 10 and 100 meters, used for long-distance broadcasting because they reflect off the ionosphere.
Before satellite communication, shortwave radio was how people heard news from distant countries: We listened to the BBC on short wave.
Also written as one word.
Receiver for distant transmissions
- international broadcastingMedia reaching foreign countries
- BBC World ServiceUK international radio broadcaster
- Voice of AmericaFederal international broadcasting service
- religious broadcastingTransmitting worship via media
time signal · programming · schedule · listener · station identification
One who accepts transmission
- transmitterSignal-emitting device
- antennaBroadcast signal receiver
- tunerDevice selecting broadcast frequencies
- crystal setBasic radio receiver
bandwidth · selectivity · sensitivity · frequency · megahertz · kilohertz · modulation · amplitude modulation
Licensed hobbyist broadcasting
- amateur radioLicensed hobbyist wireless communication
- transceiverDual-function communication device
- CWSensitive content alert
- morse codeDot-dash alphabet system
call sign · radio operator · rig · shack · antenna · dipole · contest · field day
Charged upper atmospheric layer
- skywaveRadio reflected by atmosphere
- solar cycleRecurring pattern of stellar activity
- sunspotDark stellar surface region
- geomagnetic stormMagnetosphere disruption from solar activity
fadeout · multipath · reflection · refraction · atmospheric conditions · signal strength · interference · static
shortwave radio
Receiver for distant transmissions
- international broadcastingMedia reaching foreign countries
- BBC World ServiceUK international radio broadcaster
- Voice of AmericaFederal international broadcasting service
religious broadcasting · time signal · programming · schedule · listener · station identification
receiver
One who accepts transmission
- transmitterSignal-emitting device
- antennaBroadcast signal receiver
- tunerDevice selecting broadcast frequencies
crystal set · bandwidth · selectivity · sensitivity · frequency · megahertz · kilohertz · modulation · amplitude modulation · demodulator
ham radio
Licensed hobbyist broadcasting
- amateur radioLicensed hobbyist wireless communication
- transceiverDual-function communication device
- CWSensitive content alert
morse code · call sign · radio operator · rig · shack · antenna · dipole · contest · field day · emergency communication
ionosphere
Charged upper atmospheric layer
- skywaveRadio reflected by atmosphere
- solar cycleRecurring pattern of stellar activity
- sunspotDark stellar surface region
geomagnetic storm · fadeout · multipath · reflection · refraction · atmospheric conditions · signal strength · interference · static · fading
short waveslong waves
Extended ocean swells
ocean swells · ground swells · groundswell · rolling waves · tsunamis
short, wave, waves, shorter, shortest, shorten, shortened, shortening, shortly