Brand new replacement antenna for Topcon and Sokkia GPS systems. This antenna is for GPS with 450-470mhz frequency radios. The antenna has a BNC 1/4 turn connector with male center pin.
Works with following GPS:
Topcon GR-3
Topcon GR-5
Topcon Hiper II
Sokkia GRX1
Sokkia GRX2