The traditional 'mushroom' shaped GPS aerials use a connector known as a BNC which is a push and twist device (there is a similar TNC which is a screw on connector but is quite rare and mainly found on Furuno GPS aerials).The Onwa 5 and 7 inch plotters have a small connector known as an SMA connecto..
The new small Puck type GPS aerials have a connector known as an SMA connector: - this will connect directly to Onwa 5 and 7 inch plotters, however, 8 and 12 inch models and also the KS-200A AIS Black Box transceiver needs a BNC type.This adaptor will convert the SMA connector to a BNC Price in..