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H Vector Navtex Antenna
Conventional navtex antennas respond to the electrical component associated with the navtex radio signal. They usually perform well at sea where electrical interference is low but can sometimes be overwhelmed with interference especially when in harbour and connected to shore power.
In most small craft the electrical system acts as an effective ground for the antenna but it can also be a source of interference conducted from other electrical equipment on board. Electrical interference can result in poor reception especially in a marina where the ambient level is high or at sea when poorly suppressed electrical equipment is in use.
The omnidirectional H-Vector antenna is not sensitive to electric fields but to the magnetic component of the navtex signal. As a result it is less sensitive to locally generated interference and, as it does not need a ground, it is not affected by conducted ground interference whether in harbour or at sea.
The net result is that, under adverse conditions, the H-Vector antenna can deliver a significant improvement to navtex reception. The mushroom shaped antenna is compatible with the Clipper navtex, series 2 Target navtex and with the navtex engine. It can be mounted on a cabin roof or rail mounted using an appropriate threaded antenna base.
I am delighted with our new antenna. Our Navtex , normally somnolent in the marina, has burst into life!
Someone asked me recently – why bother with Navtex? My answer was simple. Last year a gale blew up suddenly on the Turkish Aegean coast. The Navtex transmitter at Izmir issued an urgent gale warning out of ‘normal hours’ and it was the only service to do so! For example there was nothing about this gale on PredictWind on our WiFi.
Now had a full month on the boat in Turkey cruising around and am even more delighted than ever with the new antenna!
John E – cruising in Turkey
RG 58 10 m Cable pack
Coaxial cables are vital to the performance of your antenna and radio system. Selecting the best coaxial cable has become more and more complicated as more suppliers are offering a broader range of products. The cable selected will affect the system’s cost, coverage and reliability. That’s why for our antennas we only use one type of coaxial cable, the TOP PERFORMANCE RG 58 CU MIL, designed to guarantee the best signal transmission.
Clipper Tactical/True/Apparent Wind display
The Clipper True Wind Display shows apparent wind speed and direction, when connected to a log or GPS, it can also show true wind speed and direction.
Requires NMEA boat speed input either VHW from log or RMC from GPS for True wind speed and direction
Supply voltage nominal 12 Volts
Supply current 10mA + (10mA for back light
NMEA input sentence MWV
Back light – 9 levels
Pointer style – 1
Display wind speed – 0 to 99 Kts
Display Wind angle – 0 to 360 degrees
represented by 60 segments
Display case size 110 x 110mm
5M Extension cable
5 metre long extension cable (5 way) for early type 5 wire wind masthead unit or for extending the Clipper Depth Repeater cable.
(Note this cable suits the early type masthead units without the masthead connectors,
if it is to be used with later type masthead units removal of the plug and socket is required)
(Note this is not suitable with the later version 3 wire wind mast head units.)
AIS Engine 3 upgrade processor
The AIS Engine 1 and 2 can be upgraded to AIS Engine 3 specification by replacing the processor. This is a straightforward procedure where the old device is simply unplugged from its socket and replaced by the new device. AIS Engine 3 relays all AIS messages.
Clipper Wind NMEA Output cable (5 metre for MK1 five wire masthead systems)
This cable connects to the back of the MK1 five wire Clipper Wind display to enable the NMEA output to be connected to external devices. Cable length 5 metres Fitted with 2 way wire trap terminal block