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AIS Transponders & Transceivers

An AIS transponder shows you the name, course and speed of nearby vessels on your chartplotter and broadcasts your own position so they can see you. Choose from the SOLAS-certified em-trak A200 Class A, the B400 and B200 5W Class B units, the compact B900 series and the I100-X small vessel tracker.

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em-trak I100-X tracker on mounting bracket, angled
em-trak I100-X AIS small vessel tracker on bracket, front view
$735.57 - $735.57
$735.57
$735.57 - $735.57
$735.57

em-trak I100-X AIS Small Vessel Tracker – Battery-Powered Class B Transponder, IPx8

em-trak

The em-trak I100-X is a self-contained AIS Class B transponder for tracking small craft such as tenders, RIBs, jet skis, work boats and non-motoriz...

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$735.57 - $735.57
$735.57
$735.57 - $735.57
$735.57
em-trak B954 AIS transceiver angled view
em-trak B954 Class B AIS transceiver front view
$1,304.82 - $1,304.82
$1,304.82
$1,304.82 - $1,304.82
$1,304.82

em-trak B954 Class B AIS Transceiver – 5W SOTDMA, Wi-Fi, Bluetooth & VHF Splitter

em-trak

The em-trak B954 is the top of the B900 range: 5W SOTDMA transmit, Wi-Fi, Bluetooth and a built-in VHF antenna splitter in one compact unit. Like e...

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$1,304.82 - $1,304.82
$1,304.82
$1,304.82 - $1,304.82
$1,304.82
em-trak B953 AIS transceiver angled view
em-trak B953 Class B AIS transceiver front view
$946.44 - $946.44
$946.44
$946.44 - $946.44
$946.44

em-trak B953 Class B AIS Transceiver – 5W SOTDMA, VHF Splitter

em-trak

The em-trak B953 is a high-power 5W SOTDMA model with a built-in VHF antenna splitter, so AIS and your VHF radio run from one antenna. Like every B...

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$946.44 - $946.44
$946.44
$946.44 - $946.44
$946.44
em-trak B952 AIS transceiver angled view
em-trak B952 Class B AIS transceiver front view
$1,052.37 - $1,052.37
$1,052.37
$1,052.37 - $1,052.37
$1,052.37

em-trak B952 Class B AIS Transceiver – 5W SOTDMA, Wi-Fi & Bluetooth

em-trak

The em-trak B952 is a high-power 5W SOTDMA model with built-in Wi-Fi and Bluetooth for wireless connection to phones, tablets and apps. Like every ...

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$1,052.37 - $1,052.37
$1,052.37
$1,052.37 - $1,052.37
$1,052.37
em-trak B951 AIS transceiver angled view
em-trak B951 Class B AIS transceiver front view
$757.35 - $757.35
$757.35
$757.35 - $757.35
$757.35

em-trak B951 Class B AIS Transceiver – 5W SOTDMA

em-trak

The em-trak B951 is a high-power 5W SOTDMA model for longer range, faster updates and higher priority in busy waters. Like every B900-series transc...

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$757.35 - $757.35
$757.35
$757.35 - $757.35
$757.35
em-trak B924 AIS transceiver angled view
em-trak B924 Class B AIS transceiver front view
$1,177.11 - $1,177.11
$1,177.11
$1,177.11 - $1,177.11
$1,177.11

em-trak B924 Class B AIS Transceiver – 2W CSTDMA, Wi-Fi, Bluetooth & VHF Splitter

em-trak

The em-trak B924 is the fully equipped standard-power model, with Wi-Fi, Bluetooth and a built-in VHF antenna splitter. Like every B900-series tran...

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$1,177.11 - $1,177.11
$1,177.11
$1,177.11 - $1,177.11
$1,177.11
em-trak B923 AIS transceiver angled view
em-trak B923 Class B AIS transceiver front view
$820.71 - $820.71
$820.71
$820.71 - $820.71
$820.71

em-trak B923 Class B AIS Transceiver – 2W CSTDMA, VHF Splitter

em-trak

The em-trak B923 is a standard-power model with a built-in VHF antenna splitter, so AIS and your VHF radio share one antenna. Like every B900-serie...

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$820.71 - $820.71
$820.71
$820.71 - $820.71
$820.71
em-trak B922 AIS transceiver angled view
em-trak B922 Class B AIS transceiver front view
$924.66 - $924.66
$924.66
$924.66 - $924.66
$924.66

em-trak B922 Class B AIS Transceiver – 2W CSTDMA, Wi-Fi & Bluetooth

em-trak

The em-trak B922 is a standard-power model that adds built-in Wi-Fi and Bluetooth, so phones, tablets and navigation apps connect without cables. L...

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$924.66 - $924.66
$924.66
$924.66 - $924.66
$924.66
em-trak B921 AIS transceiver angled view
em-trak B921 Class B AIS transceiver front view
$630.63 - $630.63
$630.63
$630.63 - $630.63
$630.63

em-trak B921 Class B AIS Transceiver – 2W CSTDMA

em-trak

The em-trak B921 is the most affordable model in the B900 series, with reliable standard-power performance for smaller boats. Like every B900-serie...

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$630.63 - $630.63
$630.63
$630.63 - $630.63
$630.63
em-trak B200 AIS transceiver angled view
em-trak B200 Class B AIS transceiver front panel
$1,388.97 - $1,388.97
$1,388.97
$1,388.97 - $1,388.97
$1,388.97

em-trak B200 Class B AIS Transceiver – 5W SOTDMA with Internal Battery Backup

em-trak

The em-trak B200 is a 5W SOTDMA Class B AIS transceiver with a built-in rechargeable battery. If vessel power fails, it switches to the internal ba...

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$1,388.97 - $1,388.97
$1,388.97
$1,388.97 - $1,388.97
$1,388.97
em-trak B400 AIS transceiver angled view
em-trak B400 Class B AIS transceiver front with color chart display
$1,579.05 - $1,579.05
$1,579.05
$1,579.05 - $1,579.05
$1,579.05

em-trak B400 Class B AIS Transceiver – 5W SOTDMA with 5-Inch Color Display

em-trak

The em-trak B400 is a high-power Class B AIS transceiver with its own 5-inch color screen. It transmits at 5W SOTDMA for longer range and higher pr...

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$1,579.05 - $1,579.05
$1,579.05
$1,579.05 - $1,579.05
$1,579.05
em-trak A200 AIS Class A angled view on mounting bracket
em-trak A200 Class A AIS transceiver front with chart display
$2,470.05 - $2,470.05
$2,470.05
$2,470.05 - $2,470.05
$2,470.05

em-trak A200 Class A AIS Transceiver – 12.5W SOTDMA, SOLAS & Inland Waterway Certified

em-trak

The em-trak A200 is a Class A AIS transceiver for commercial vessels, superyachts and inland waterway craft that must carry Class A. It is SOLAS an...

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$2,470.05 - $2,470.05
$2,470.05
$2,470.05 - $2,470.05
$2,470.05
em-trak X100 VHF/DSC/AIS radio front panel with color display and fist mic
em-trak X100 VHF/DSC marine radio with AIS Class B and fist mic, angled view
$1,869.90 - $1,869.90
$1,869.90
$1,869.90 - $1,869.90
$1,869.90

em-trak X100 VHF/DSC Marine Radio with Built-in AIS Class B 5W Transceiver

em-trak

The em-trak X100 combines a Class D VHF/DSC marine radio and a 5W SOTDMA AIS Class B transceiver in one base station. A built-in zero-loss antenna ...

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$1,869.90 - $1,869.90
$1,869.90
$1,869.90 - $1,869.90
$1,869.90

Popular picks: the B953 (5W with built-in splitter), the B921 (best-value 2W) and the X100, a VHF/DSC radio and 5W AIS in one.

How to choose an AIS unit

  • Class A or Class B: Class A (12.5W) is required on SOLAS vessels and many commercial and inland waterway craft. Leisure boats and most work boats use Class B.
  • 2W CSTDMA or 5W SOTDMA: 5W SOTDMA Class B units reach further, update faster and get priority in busy waters. 2W CSTDMA is the budget choice for coastal and inland use.
  • Transceiver or receiver: a transceiver shows other vessels and broadcasts your position; a receiver such as the R300 only shows other vessels.
  • One antenna or two: models with a built-in VHF splitter (B923, B924, B953, B954 and the X100) share your existing VHF antenna. Otherwise add an S300 splitter or a dedicated AIS antenna.
  • Wired or wireless: every em-trak unit outputs NMEA 0183 and NMEA 2000; Wi-Fi and Bluetooth models also connect to phones, tablets and navigation apps.

New to AIS? Read our guide: Class A vs Class B AIS: which AIS transponder do you need?

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