The TE Connectivity B4305CNS is a 36 inch chrome base coil whip antenna with NMO mount that operates in the 430–450 MHz range for UHF machine to machine communications. This antenna includes a spring base so you don't have to worry about the antenna becoming broken in vehicular applications. The B4305CNS antenna does NOT require a ground plane. Designed and built to TE Connectivity's exacting standards for ruggedness and durability these mobile antennas are ideal for many types of mobile land radio applications 

• Low loss coil form adds dimensional and frequency stability
• ABS material is injection molded around solid brass inserts to create a virtually indestructible housing that is virtually leak proof
• All silver soldered joints ensure electrically and mechanically secure connections