What Is FME RF Connector In the world of radio frequency (RF) connectors, the FME (For Mobile Equipment) connector stands out as a unique and somewhat mysterious component. With an impedance of 50 Ω and a maximum operating frequency of 3.00 GHz, it finds its niche primarily in automotive UHF applications. This connector, sometimes referred to as SAP (SubMiniature version A with Push-on) connectors, is easily recognizable by its distinctive screw-on coupling mechanism, making it distinct from other connectors. In this comprehensive discussion, we will delve into the characteristics, history, applications, and limitations of the FME RF connector.