UHF connector

UHF connectors were developed in the 1930s by E. Clark Quackenbush for high frequency applications.

In principle, it is in the UHF connector for a shielded 4-mm banana plugs. In contrast to other high-frequency connectors UHF connectors have no defined wave impedance, it is depending on the design, manufacturer and sometimes frequency at 30 Ω, others at 50 Ω. For this reason, no standing wave ratio can be specified for UHF connector, which precludes their use in high-quality devices.

Has often encountered designation PL- plug its origin in the name PL -259 of the U.S. military for the standard plug this standard.

UHF connectors are suitable, despite its name not for frequencies in the UHF range. The term originated, were as frequencies above 300 MHz rarely achieved. Although these connectors of manufacturers are stated to be suitable for use up to 200 or 300 MHz, assume undesirable absorption and reflection of RF signals already clearly below. Jokingly is therefore often said that here UHF would be the acronym for " Not suitable for high frequency ".

In amateur radio finds use in KW and in the VHF range. Device in the UHF range and above using the N- connector. He is also a CB radio the most common connector

Although was available with the N connector as early as 1942 a high-quality substitute, UHF connectors are used due to their low price today.

Mini - UHF connectors are a modified and scaled-down design of the known UHF connector. Improved electrical and mechanical properties characterize the mini- UHF connector. By the teeth of the screw (see picture) it is intended especially for mobile use and prevents loosening and especially twisting the connectors due to vibration. In contrast to the UHF connector can speak of a defined wave impedance of 50 Ω and are therefore used to 2.5 GHz.

• Connectors
• Wireless technology