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Difference between revisions of "Simplex"

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Simplex radio usage was historically the most used communication form.  It describes the use of a single radio frequency channel for communication.  The best example of such a use is the CB radio.  All users on one of the pre-assigned channels share that channel with all other users on the channel.  Obviously such single frequency/channel usage has problems and is especially problematic when dealing in public safety communications.  When one person is talking, this interferes with communication between others.  If a radio becomes keyed-up in error, all other radios in the area are basically deaf.  Even if there is no such ''dead air'' issue, each user must still wait for the previous user to finish so that the channel is clear for them to use it.
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Simplex radio usage was historically the most used communication form.  It describes the use of a single radio frequency channel for communication.  The best example of such a use is [[Citizens Band]] (CB) radio.  All users on one of the pre-assigned channels share that channel with all other users on the channel.  Obviously such single frequency/channel usage has problems and is especially problematic when dealing in public safety communications.  When one person is talking, this interferes with communication between others.  If a radio becomes keyed-up in error, all other radios in the area are basically deaf.  Even if there is no such "dead air" issue, each user must still wait for the previous user to finish so that the channel is clear for them to use it.
  
--[[User:Loumaag|Loumaag]] 16:18, 4 Jan 2005 (EST)
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In the RR Database, simplex frequencies are noted with "B" and/or "M" in the "Type" column.
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[[Category:Amateur Radio Glossary]]
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[[Category:Aviation Glossary]]
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[[Category:Database Glossary]]
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[[Category:HF Glossary]]
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[[Category:Military Glossary]]
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[[Category:Professional Radios Glossary]]
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[[Category:Receivers Glossary]]
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[[Category:Scanners Glossary]]
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[[Category:Signal Analysis and Decoding Glossary]]
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[[Category:Software Glossary]]
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[[Category:Trunktracking Glossary]]

Latest revision as of 04:52, 11 March 2016

Simplex radio usage was historically the most used communication form. It describes the use of a single radio frequency channel for communication. The best example of such a use is Citizens Band (CB) radio. All users on one of the pre-assigned channels share that channel with all other users on the channel. Obviously such single frequency/channel usage has problems and is especially problematic when dealing in public safety communications. When one person is talking, this interferes with communication between others. If a radio becomes keyed-up in error, all other radios in the area are basically deaf. Even if there is no such "dead air" issue, each user must still wait for the previous user to finish so that the channel is clear for them to use it.

In the RR Database, simplex frequencies are noted with "B" and/or "M" in the "Type" column.