Motorola antenna plug is a common coaxial
cable RF connector. It is used mostly in cars for connecting the coaxial
feedline from the antenna to the radio receiver. Sometimes, it is used for linking scanner
antennas to scanners. The male plug mostly looks like as an RCA connector in
size and shape. However, the sleeve is "folded" back over the coax instead
of being concentric to the pin.
The pin is
fused to the central conductor of the coaxial cable coming from the antenna. Moreover,
the grounded side forms a 1.5 inch (38 mm) long sleeve around the coax. The
sleeve has one or more longitudinal spring surfaces. It delivers a reliable
electrical contact by wiping against the mating female socket.