VHF with AIS

[Monique]

My SH 2100E is brilliant. Not linked to a plotter though as I do not believe in all my eggs in one basket...

I also have a SH cockpit repeater with built in speaker with integrated AIS. That kit is the dog's B*******. This is the kit you want in the cockpit... IMO.

I got over 80 nm range on 9 Jun and passed a PX to Toulon during a very Rock and Roll night.

 

[JeffRobbins]

There are definite differences in AIS receivers besides whether they are single or dual channel. And receive-only units don't have to pass the same tests as AIS transponders which have to demonstrate minimum signal levels they can receive and packet error rates, among many other things. So, if you want to be sure you are receiving everything you can, then it's best to be sure the AIS receiver you are getting meets the specs of AIS transponders.

Also, if you are looking for a standalone AIS display to go with a SH radio (or other AIS receiver) you might want to consider a Vesper Marine WatchMate 670.

 

[Caer Urfa]

I own a GX2100E and it's linked to a Standard Horizon CP300E plotter. Apart from all its AIS capabilities, it's a cracking radio in it's own right. It's very useful to be able to select an MMSI of a vessel and call them directly without having to mess about entering numbers. I'd recommend the set to anyone.

Do you run the GX2100E on a seperate aerial to the CP300 plotter? or run the plotter from the GX 2100 aerial alone.

As they are both SH was it a matter of 'plug in and play' on installation as this is my prefered option to keep both compatible.

Mike

 

[prv]

Do you run the GX2100E on a seperate aerial to the CP300 plotter? or run the plotter from the GX 2100 aerial alone.

Why would a plotter have a VHF aerial? Unless it had an inbuilt AIS which the CP300 doesn't.

Pete

 

[Kerenza]

If anyone is interested in the answer to my question re ais message transmission rate, I have found the official answer here

http://www.ialathree.org/iala/pages/AIS/IALATech1.5.pdf

I suppose if an ais Rx doesn't get any info then it cant relay it! Although for testing purposes it would be handy to have a constant data stream.

 

[Reverend Ludd]

This thread inspired me to go out and get one of these this morning.

NAVICOM RT650 DSC VHF WITH AIS AND WIRELESS REMOTE

 

[JeffRobbins]

Can someone tell me if the data stream protocol provides for constant (repeated messages ?) transmission?
When there are no targets in range or they are at anchor and thus transmitting at longer intervals, navmon pc reports no signal from the radio. Or is this a fault / feature of this set?

The AIS data stream represents the received messages, so if there are no messages being received then the data stream will be empty. Some transponders put an own-ship report into the data stream at periodic intervals also. Others only put the own-ship report into the stream when they actually transmit. But this doesn't apply to receive-only units. The data stream runs at 38,400 baud and could be fully consumed with received data in extremely high load situations.