SO-239, UHF Female
SO-239 is the female counterpart to the male PL-259 coax connector. The panel mount variety is frequently used as the antenna connector on the back panel of receivers and transceivers.
This collection is a mixture of new and used SO-239 connectors and adapters from many sources.
If you are looking only for new SO-239 connectors/adapters, look under the Max-Gain Systems menu item, and look under sub-menu item "SO-239 - MGS".