What is a Class B AIS transponder?

Class B AIS Transponders are mainly used by recreational vessels and smaller commercial vessels. Information transmitted by Class B transponders can be “seen” by all AIS receiving equipment. Class B transponders also receive all Class A and Class B AIS transmissions.

What is a Class B transponder?

Class B transponders are designed to be used on marine vessels smaller than ships. Each unit has a VHF >Transmitter, two VHF receivers, one of which is multiplexed with the VHF Digital Selective Calling (DSC) Receiver, and a GPS active antenna. Static and dynamic vessel data.

How much does an AIS transponder cost?

Our Price: $829.00 Navico 00013609001 Reduce your risk of collision with the NAIS-500 class B AIS fully integrated, transponder – essential for navigating today’s busy shipping lanes and congested ports.

What is Class A and Class B AIS?

Class A AIS transponders are required to have a DSC (156.525 MHz) receiver, external GPS, heading, and rate of turn indicator, and can also transmit and receive safety-related text messages. Class B AIS transponders operate using Carrier-Sense TDMA (CSTDMA) broadcast mode and transmit at a power level of 2 watts.

What is AIS Class A and B?

How often does Class B AIS transmit?

Position updates for Class B transponders are broadcast less often than Class A transponders. Vessels going less than 2 knots transmit position updates every 3 minutes while vessels traveling more than 2 knots transmit position information every 30 seconds.

What is the range of Class B AIS?

The main difference between Class A and Class B units is the power output, Class B transmits at 2W, giving a range of between 8-10 miles, whilst Class A transmits at 12.5W giving a much larger range.

Why do boats have 2 antennas?

The advantages of the dual antenna Not only does the installation of a second antenna give better readability to the AIS signal, but it can also serve as an emergency antenna for VHF. Just allow enough length behind the unit to disconnect the antenna from the AIS and connect it to the VHF.

What VHF antenna is required for AIS receiver and transponder?

Antenna type: The type of VHF antenna you use with your AIS system can also have a big impact on AIS range. Most VHF antennas are optimally tuned around 155-156 MHz but AIS uses frequencies around 162 MHz. In some cases, a good VHF antenna might be substantially less tuned at even close adjacent frequencies.

What type of antenna does the watcheye B AIS transponder need?

The Watcheye B AIS transponder has to be connected to a VHF antenna. With this new generation splitter there is no difference between two separate antennas as there is minimal loss in signal. The Watcheye S splitter comes with all necessary connection cables to AIS and VHF and it will save a lot of installation time.

What is the best AIS receiver for my Boat?

Watcheye Dual channel AIS Receiver. This is a less expensive solution that provides all necessary information. The Watcheye R AIS receiver shows all the vessels in your range and it is also frequently used in harbors, at bridges and floodgates and during regattas and other events.

What is the watcheye your AIS receiver?

The Watcheye R AIS receiver shows all the vessels in your range and it is also frequently used in harbors, at bridges and floodgates and during regattas and other events. Our products are designed to function in extreme conditions and are also easily installed. On this website there are many technical product details.

How does the watcheye s splitter work?

The Watcheye S splitter comes with all necessary connection cables to AIS and VHF and it will save a lot of installation time. The FM radio connection gives a larger range to listen to your favorite radio shows. This is a less expensive solution that provides all necessary information.