A compact high gain (+28dBi) active GPS antenna/aerial with IP67 water protection for marine use.
£15.00
36 in stock (can be backordered)
These small antennas really work well, provided that a satellite signal is present they will provide good reception of GPS signals. They are tuned to 1575.42MHz, the frequency of the GPS signal transmitted by satellites using the GPS system. They are a highly directional antenna with a gain of +28dBi. High gain antennas work well for satellite reception as the transmitters are always from one direction only – up. 28dB is the optimum ideal as higher gain will mean a narrower reception cone and hence a more limited view of the available satellites – it is a compromise between seeing sufficient satellites for a good fix and signal strength. They are compact, being just 38 x 48 x 17mm and have 3 metres RG174 cable terminated to an SMA male connector to match the GPS connection on 7 inch range Onwa plotters and similar devices. Has a magnetic base and although this is a quite weak magnet, keep it 1 metre from a steering compass. Will magnetically attach to the top left of an Onwa KP38 or 39 case.
These small antennas give surprisingly good results even in a sheltered position – if the satellite signal is present then these antennas will work fine. A note of caution: we don’t recommend these for use with our Onwa AIS Back Boxes unless there is a way of checking the quality of the satellites received. With an Onwa plotter with its built in satellite signal strength meter this isn’t a problem but with a Black Box there may be no way of knowing if the reception is good or bad. If the Puck aerial is mounted on deck with an open view of the sky then it will be fine but if down below be cautious.
IP67 water protected and manufactured to conform to CE, FC and SGS requirements.
A commonly asked question we receive: Is it possible to extend the 3 metre cable?
Well, yes it is. As an experiment we added 5 metres of RG58 (which is not the best cable) to one of these little antennas and there was no apparent loss of signal at all.
You may need:
SMA to BNC adaptor, This will adapt the SMA connector on the PUK aerial to a BNC type suitable for products which have a BNC type GPS input connection. e.g. Onwa KP99 and KM series plotters and also the KS200A black box transceiver has a BNC input for GPS.
