Which of the following is true of PL-259 type coax connectors?
They are preferred for microwave operation
They are watertight
They are commonly used at HF and VHF frequencies✓Bonne réponse
They are a bayonet-type connector
Explication
The PL-259, or UHF connector, is the traditional amateur connector for HF and VHF work because it is rugged, cheap and easy to install. It is a screw-on rather than bayonet type, it is not watertight, and its impedance discontinuity makes it unsuitable for microwave use despite its UHF nickname.