as in long distance radio communication
1Long-distance relationship — A long distance relationship is typically an intimate relationship that takes place when the partners are separated by a considerable distance.Online dating and the internet have greatly expanded the opportunities to meet partners from other… …
2Radio communication system — A radio communication system send signals by radio. [cite book | title = Wireless Network Performance Handbook | author = Clint Smith, Curt Gervelis | year = 2003 | publisher = McGraw Hill Professional | isbn = 0071406557 | url =… …
3Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …
4Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …
5Communication with submarines — is difficult because radio waves do not travel well through thick electrical conductors like salt water. The obvious solution is to surface and raise an antenna above the water, then use ordinary radio transmissions. Early submarines had to… …
6radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining …
7Communication Moon Relay — For the moon bounce children s entertainment inflatable, see moonwalk (bounce house). Sailors on board the USS Hancock (CV 19) spelling out Moon Relay. This picture was transmitted via moon bounce as part of the official Navy… …
8Radio transmitter design — In plate modulation systems the voltage delivered to the stage is changed. As the power output available is a function of the supply voltage, the output power is modulated. This can be done using a transformer to alter the anode (plate) voltage.… …
9Radio Fréquence — Onde radio Une onde radioélectrique (dite onde radio) est une onde électromagnétique dont la fréquence est inférieure à 3 000 GHz, soit une longueur d onde supérieure à 0,1 mm. Sommaire 1 Définition et réglementation 2 Spectre… …
10Radio fréquence — Onde radio Une onde radioélectrique (dite onde radio) est une onde électromagnétique dont la fréquence est inférieure à 3 000 GHz, soit une longueur d onde supérieure à 0,1 mm. Sommaire 1 Définition et réglementation 2 Spectre… …
