Marine GPS and GLONASS antennas use TNC connectors for the weather-resistant threaded coupling providing better vibration resistance than BNC at GPS frequencies around 1575 MHz on chartplotters and AIS receivers.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Center Pin | GPS L1 signal 1575 MHz | BUS |
| 2 | Outer Thread | Ground and weatherproof shield | GND |
Marine GPS and GLONASS antennas use TNC connectors for the weather-resistant threaded coupling providing better vibration resistance than BNC at GPS frequencies around 1575 MHz on chartplotters and AIS receivers.