- UHF connector
The UHF connector, also called the
Amphenol coaxial connector, is aWorld War II threadedRF connector design, from an era when
UHF referred to frequencies over 30 MHz.Originally intended for use as avideo connector inRADAR applications,it was later used for RF applications.UHF connectors are generally usable through what is now known as the VHF and HF frequencies and can handle RF power levels over one
kilowatt . Despite the name it is rarely used for actual UHF frequencies as they don't work well above 300 MHz.The most popular cable plug and chassis-mount socket carry the old
Signal Corps nomenclatures PL-259 and SO-239, respectively. The PL-259 can be used with large diametercoaxial cable , such as RG-8/U and RG-9/U, and the smaller diameter RG-58/U and RG-59/U with the UG-175/U and UG-176/U adapter sleeves. Technically, "PL-259" refers to one specific mechanical design, but the term is often used for any UHF cable plug. The thread is usually 5/8 inch 24tpi UNEF standard, however, UHF connectors with a similar, metric, thread have been produced [citation|title=IC-20 Instruction Manual|pages=4|url=http://www.icom.co.jp/manual/external/transceivers/IC-20.pdf|access-date=2007-09-20] .The center conductor jack on the SO-239 will also accept abanana plug .UHF connectors were replaced in many applications by designs that have a more uniform impedance over the length of the connector, such as the
N connector and theBNC connector , but they are still widely used inamateur radio ,citizens' band radio , andmarine VHF radio .UHF connectors were also used for the input & output of
composite video signals for older video equipment (such as VTRs & monitors) dating from the late 1970s and earlier. They were known by BBC engineers as 'F & E' connectors, after Films & Equipment, a manufacturer.ee also
Miniature UHF connector References
External Links
* [http://www.electronics-radio.com/articles/electronic_components/rf-connectors/uhf-connector-so239-pl259.php UHF connector overview]
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