the comunication,audio, video, digital, TV, antenna,RF and microwave industries, each designed for a specific purpose and application.
Common Coaxial Connectors
with dielectric lowers the highest frequency and increases losses. The mating process typically changes the geometry of the mating surfaces and resistance loss at those interfaces as well as geometric changes result in variation of impedance and loss.
Some RF connectors are sexless (such as the HP/Amphenol APC-7 and the General Radio GR874 and GR900BT). Most connectors have female structures with slotted fingers that introduce a small inductance. The fingers accommodate tolerance variations, but reduce repeatability and may ultimately break after 1000 connections. There are slotless versions of connectors available, but they are, for the most part, relegated to instrument interfaces. Slotless female connectors are very difficult to clean and require very careful connection and disconnection.
Sex and Connectors
COAXIAL CONNECTOR CHART
Other names (or mates with)
100 kHz or less
Ever see those old telephone switchboards with hundreds of jacks and patch cords and plugs? Those are phone jacks and plugs, also known as TS (Tip-Sleeve) for two-conductor connections, or TRS (Tip-Ring-Sleeve) for three-conductor connections. They are now used widely with musical instruments and audio equipment. The phone plug is the male connector, a phone jack is the female connector. The standard diameter of the plug is 0.25", but many smaller sizes are available as well. These are really only suitable for audio frequencies.
Phono plugs and jacks
A round, press-on connector commonly used for consumer-grade audio and composite video connections. In most recent home stereo equipment, the jacks are color-coded as follows: red (audio-Right), black or white (audio-Left) and yellow (composite video). Generally not a constant characteristic impedance connector.
PL-259 (male), SO-239 (female)
300 MHz or less
The UHF type connector saw its conception in the early 1930's, a time when VHF/UHF technology was quite new. The forefathers of VHF were in many cases Amateur radio experimenters, most with Engineering and technical backgrounds. They began experimenting and working the VHF frontier around 1926. Soon thereafter research into FM radio and Television began and out of this era came the then named UHF connector. Manufacturers of UHF plugs and receptors all state that this type connector are of generally non-constant (characteristic) impedance and are suitable for use up to 200 or 300 MHz only, depending on production quality. They also state that the UHF connector can be used up to 500 MHz with a cautionary note of reduced performance.
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