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・ Echography
・ Echohawk
・ Echohawk (disambiguation)
・ Echoic memory
・ Echoing Angels
・ Echoing Delight
・ Echoing Green
・ Echoing River
・ Echoism
・ Echol Cole
・ Echola, Alabama
・ Echolab
・ Echolalia
・ Echolalia (album)
・ Echolette
Echolink
・ Echolocation
・ Echolocation (album)
・ Echolocation jamming
・ Echologics
・ Echols
・ Echols (surname)
・ Echols County School District
・ Echols County, Georgia
・ Echols Farm
・ Echols Memorial Christian Church
・ Echols, Kentucky
・ Echolyn
・ Echolyn (1991 album)
・ Echolyn (2012 album)


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Echolink : ウィキペディア英語版
Echolink

EchoLink is a computer-based Amateur Radio system distributed free of charge that allows radio amateurs to communicate with other amateur radio operators using Voice over IP (VoIP) technology on the Internet for at least part of the path between them. It was designed by Jonathan Taylor, a radio amateur with callsign K1RFD.
The system allows reliable worldwide connections to be made between radio amateurs, greatly enhancing Amateur Radio's communications capabilities. In essence it is the same as other VoIP applications (such as Skype), but with the unique addition of the ability to link to an amateur radio station's transceiver. Thus any low-power handheld amateur radio transceiver which can contact a local Echolink node (a node is an active Echolink station with a transceiver attached) can then use the Internet connection of that station to send their transmission via VOIP to any other active Echolink node, world-wide. No special hardware or software is required to relay a transmission via an Echolink node.
Before using the system it is necessary for a prospective user's callsign to be validated. The EchoLink system requires that each new user provide positive proof of license and identity before his or her callsign is added to the list of validated users. There is no cost for this service, and it ensures that this system is used only by licensed amateur radio operators.
The software is written to run on 32-bit and 64-bit versions of Microsoft Windows. Another edition of the software runs on Apple mobile devices (iPhone, iPod touch, and iPad), and is available from the Apple App Store. An Android version is available on Google Play and several other Android app repositories.
== Uses ==
Radio amateurs using the EchoLink software can operate it in one of two modes:
*Single User Mode. If they have an Internet-connected computer, they can use the computer's microphone and speakers to connect to (or through - see below) other EchoLink-enabled computers over the Internet and talk to the amateur at the other end.
*Sysop Mode. This entails connecting their own VHF or UHF transceiver to their Internet-connected PC with a specially-designed hardware interface. Doing this enables another radio amateur with their own transceiver, who is within radio range of this station, to communicate with (or through) any other EchoLink-equipped station anywhere in the world. This is the unique feature of EchoLink.
Radio amateurs without the EchoLink software or a computer connected to the Internet can take advantage of the EchoLink network if they are within radio range of a sysop mode EchoLink station. It is also possible to link a sysop mode EchoLink station to a local repeater, further enhancing the communication possibilities.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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