Motorola NAG4000 GPS Only Stubby Antenna
Model Number:  NAG4000
This antenna is used when a Public Safety Microphone is attached to the radio and the radio still requires GPS capability.
This antenna attaches to the APX radio directly and is only used when the radio is operating in a single band configuration of UHF or 700/800 MHz.
This antenna only provides GPS reception and cannot be used for RF transmissions at UHF, VHF or 700/800 MHz. This antenna should never be attached to the public safety microphone.