翻訳と辞書 ・ Selby, Victoria
・ Selby-Bigge baronets
・ Selby-on-the-Bay, Maryland
・ Selbysport, Maryland
・ Selbyville, Delaware
・ Selbyville, West Virginia
・ Selbë
・ Selbükü, Bilecik
・ SELC District (LCMS)
・ Selca
・ Selca dialect
・ Selca kod Starog Grada
・ Selca, Brač
・ Selca, Železniki
・ SELCAL
・ Selcall
・ Selce
・ Selce (Prilep)
・ Selce nad Blanco
・ Selce pri Leskovcu
・ Selce pri Moravčah
・ Selce pri Špeharjih
・ Selce, Banská Bystrica District
・ Selce, Croatia
・ Selce, Krupina District
・ Selce, Lenart
・ Selce, Litija
・ Selce, Lukovica
・ Selce, Pivka
・ Selce, Poltár District
|
|
Selcall
Selcall (selective calling) is a type of squelch protocol used in radio communications systems, in which transmissions include a brief burst of sequential audio tones. Receivers that are set to respond to the transmitted tone sequence will open their squelch, while others will remain muted.
Selcall is a radio signalling protocol mainly in use in Europe, Asia, Australia and New Zealand, and continues to be incorporated in radio equipment marketed in those areas.
==Details==
The transmission of a selcall code involves the generation and sequencing of a series of predefined, audible tones. Both the tone frequencies, and sometimes the tone periods, must be known in advance by both the transmitter and the receiver. Each predefined tone represents a single digit. A series of tones therefore represents a series of digits that represents a number. The number encoded in a selcall burst is used to address one or more receivers. If the receiver is programmed to recognise a certain number, then it will un-mute its speaker so that the transmission can be heard; an unrecognised number is ignored and therefore the receiver remains muted.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Selcall」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|