Easy to install and use, plug and play, direct replace the old GPS antenna with TNC male connector and BNC Adapter for more device | Low-profile water resistant (IP65) housing with mounting hole at the bottom for post or pole mount, long cable (26ft / 8 meter) provides more flexible application, Comes with BNC connector, TNC adaptor and sturdy hard plastic base | Widely compatible with Boat Ship Marine GPS Navigation System Unit Modem Receiver Transducer Explorer Fishfinder Sounder with BNC and TNC male connector | Frequency Range: 1575±5MHz, Voltage: 3~5V, Amplifier Gain: 26dB, Antenna Gain: 3.5dBic, LNA Gain: 28 dB typ., Noise Figure: 1.5dB typ., Operating Temperature: -45~+85℃, Storage Temperature: -50~+90℃ | Replacement for Garmin GPS 128, GPSMAP 182, GPSMAP 188C, GPSMAP 198C, GPSMAP 220, GPSMAP 276C, GPSMAP 421, GPSMAP 530, GPSMAP 540, etc. | What's in the Box: 1 x GPS antenna (white) with TNC connector, 1 x BNC adaptor (silver), 1 x base (black)