The GPS100 is a traditional marine-grade external GPS antenna for use with all AIS transponders or Chartplotters with a female TNC GPS antenna connector and AIS receivers with an embedded GPS module requiring an external antenna using a TNC antenna port. The antenna includes 33 feet of cable with a male TNC connector. The antenna uses a standard 1 inch thread for pole mounting (pole mount not included) or can be flush mounted to a flat surface.