*Longer SMA F Threaded length for MOTOROLA HAND HELDS* 

SMA Female / BNC Female Low Loss RF Adapter

BNC (Bayonet Neill–Concelman). The connector has a 50 Ω impedance.

SMA (SubMiniature version A) connectors are semi-precision coaxial RF connectors developed in the 1960s as a minimal connector interface for coaxial cable with a screw-type coupling mechanism. The connector has a 50 Ω impedance