Communications system for transmission of speech over radio
Not to be confused with Photophone § Radiophone.
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Comparison of an amateur radio handheld transceiver, cell phone, and matchbox
A radiotelephone (or radiophone), abbreviated RT,[1] is a radio communication system for conducting a conversation; radiotelephony means telephony by radio. It is in contrast to radiotelegraphy, which is radio transmission of telegrams (messages), or television, transmission of moving pictures and sound. The term is related to radio broadcasting, which transmit audio one way to listeners. Radiotelephony refers specifically to two-way radio systems for bidirectional person-to-person voice communication between separated users, such as CB radio or marine radio. In spite of the name, radiotelephony systems are not necessarily connected to or have anything to do with the telephone network, and in some radio services, including GMRS,[2] interconnection is prohibited.
^"Signal training (all arms). Pamphlet no. 5 : signal procedure. Part III : combined joint radiotelephone (RT) procedure 1943". Imperial War Museums. Retrieved 20 April 2021.
A radiotelephone (or radiophone), abbreviated RT, is a radio communication system for conducting a conversation; radiotelephony means telephony by radio...
The general radiotelephone operator license (GROL) is a license granted by the U.S. Federal Communications Commission (FCC) that is required to operate...
The Allied militaries – primarily the US and the UK – had their own radiotelephone spelling alphabets which had origins back to World War I and had evolved...
Wiktionary, the free dictionary. "Roger, Wilco" are procedure words for radiotelephone meaning "I have heard, I will comply". Roger Wilco may also refer to:...
edition of the ARRL's The Radio Amateur's Handbook and Radiotelegraph & Radiotelephone Codes, Prowords, and Abbreviations. The book goes on to note that "Some...
Rural radiotelephone service (RRTS) provides basic, analog communications service between locations deemed so remote that traditional wireline service...
crew.[citation needed] A GMDSS system may include high-frequency (HF) radiotelephone and radiotelex (narrow-band direct printing) equipment, with calls initiated...
of which were established in Europe. With this in mind, most early radiotelephone development envisioned that the device would be more profitably developed...
newer radio voice equipment. Commercial and international telephone and radiotelephone spelling alphabets. The later NATO phonetic alphabet evolved from the...
was able to descramble scrambled voice transmission of transatlantic radiotelephone conversations between the USA and Great Britain. For this purpose, an...
Communication Instructions Radiotelephone Procedure, published by the Combined Communication Electronics Board, defines radiotelephone procedures, and contains...
SFR (French: [ɛsɛfɛʁ]; in full: Société française du radiotéléphone [sɔsjete fʁɑ̃sɛːz dy ʁadjotelefɔn]) is a French telecommunications company. It is both...
Radiotelephone Handbook" (PDF). Department of Homeland Security. January 2013. Archived from the original (PDF) on 14 October 2018. "Radiotelephone Operations"...
the strength of the radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another...
Mass media in Laos are based on a network of telephone lines and radiotelephone communications in remote areas, as well as mobile phone infrastructure...
phone Two-way radio Professional mobile radio Push-button telephone Radiotelephone Rechargeable battery Smombie Surveillance Tethering VoIP phone Also...
century beginning with Roberto Landell de Moura and Reginald Fessenden's radiotelephone experiments in 1900. This original form of AM is sometimes called double-sideband...
Allied Communications Procedure ACP 125(G): Communications Instructions Radiotelephone Procedures. These procedures consist of many different components. The...
July 18, 1907, de Forest made the first ship-to-shore transmissions by radiotelephone—race reports for the Annual Inter-Lakes Yachting Association (I-LYA)...
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