PL connector, the plug is also called PL-259, the socket SO-239 (PL engl. Plug, SO engl. Socket). The designation "UHF" stems from old times when 30 MHz was considered "Ultra High Frequency"... (see english language Wikipedia article about the UHF connector. PL plug, standard

The world’s first, smallest, self-contained, battery-powered, Multi-mode Portable Transceiver covering the HF, VHF, and UHF bands!

8CH PROFESSIONAL PMR-446 FM TRANSCEIVER
The new IC-F29SR2 is a free radio to use but has been designed for professional use. Resulting from the family of professional radio IC-F1000/F2000, with a body very slim and handy, radio remains a robust and reliable, resistant to water and dust with IP67 protection rating.
Equipped with a built-in speaker 800 mW (typical) for audio always strong and understandable.