Survey grade RTK antenna.

Electrical Specifications
Frequency Range :               GPS L1/L2, GLONASS L1/L2, Beidou B1/B2/B3
Phase Center Error (mm) :   < 2
LNA Gain (dB) :                    39 +/- 2

Mechanical Specifications
Connector Type :                 TNC
Dimension (mm) :                phi 190 x 66
Weight (Kg) :                       0.3