Author Topic: Ais Dispatcher not recognice channel 1/2  (Read 1491 times)

jimmy

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Ais Dispatcher not recognice channel 1/2
« on: 05 June, 2015, 09:15:48 pm »
Hi

My AIS Receiver reports channel 1/2 instead of channel A/B
!AIVDM,1,1,,1,13uJ>f?000QG214T:6W5uoGb0PSc,0*48

AIS dispather reports this as CRC error and doesn't forward data

is it possible to update AIS Dispatcher to recognice channel 1/2
 
Field 5 (B in this example) is a radio channel code. AIS uses the high side of the duplex from two VHF radio channels: AIS Channel A is 161.975Mhz (87B); AIS Channel B is 162.025Mhz (88B). In the wild, channel codes 1 and 2 may also be encountered; the standards do not prescribe an interpretation of these but it’s obvious enough..