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FAQs

What is the maximum range of AIS?

Since the horizontal range of AIS signals is only about 40 nautical miles (74 km), AIS traffic data is only accessible in coastal areas or ship-to-ship zones. Two VHF frequencies, 161.975 MHz and 162.025 MHz, with a bandwidth of 25 kHz, are used for AIS transmission.

To buy Automatic Identification System (AIS) products with our expert advice, please contact us or visit our Automatic Identification System (AIS) services page

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