AIS placement so no effect on ship compass

[Little Five]

Happy New Year All.
Looking at fitting AIS. Seems it must be 1 metre from ships compass, which is possible but would be close to autohelm computer. Will it affect this?
Thanks
Jerry

 

[pvb]

No, assuming the "autohelm computer" is just a computer. If it has a fluxgate compass in it, then it might be affected.

 

[jwilson]

Happy New Year All.
Looking at fitting AIS. Seems it must be 1 metre from ships compass, which is possible but would be close to autohelm computer. Will it affect this?
Thanks
Jerry

What part of an AIS system are you planning to put near a compass? Transponder, receiver, aerial, or an LCD display?

Apart from some DC power supply to the device (which just might cause some compass deviation if very close and if power wires are not twisted), most of the rest uses high frequency and quite low power alternating current which will not cause deviation. Magnets in loudspeakers (eg in radios) is the usual worry about causing significant compass errors. If an AIS display has a warning buzzer it may or may not involve a magnet - could be a piezo device with no magnet.

 

[Little Five]

Many thanks Gents for your replies. Most helpful. I am still making up my mine which AIS to buy and trying to solve the problems before I lay out the dosh.
Thanks again
Jerry

 

[SiteSurfer]

I think there are several options, starting with whether you want to receive only or transmit as well.
i just installed a DY1500 transponder (suck and blow) which needed to be placed away from the binnacle compass which was super easy as the placement was largely irrelevant as long as it had nothing other than GRP above it for the gps reception.

Because it is an NMEA 2k device the data is simply made available on the Axiom and my Raspberry Pi (via my DY N2k converter) on the network.

If you install something like the Matsutec with a screen then of course you will need to consider a little more carefully, however if your needs are modest perhaps a Standard Horizon 2200 might fit the bill with its built in AIS receive - add something like an 0183 dongle converter and the data could be made available on your backbone from there, or as I did for several years - simply have an external RAM mike with the display on at the binnacle.

There are plenty of options, a good place to start is to decide whether to have a transponder or just receive.

 

[Little Five]

I think there are several options, starting with whether you want to receive only or transmit as well.
i just installed a DY1500 transponder (suck and blow) which needed to be placed away from the binnacle compass which was super easy as the placement was largely irrelevant as long as it had nothing other than GRP above it for the gps reception.

Because it is an NMEA 2k device the data is simply made available on the Axiom and my Raspberry Pi (via my DY N2k converter) on the network.

If you install something like the Matsutec with a screen then of course you will need to consider a little more carefully, however if your needs are modest perhaps a Standard Horizon 2200 might fit the bill with its built in AIS receive - add something like an 0183 dongle converter and the data could be made available on your backbone from there, or as I did for several years - simply have an external RAM mike with the display on at the binnacle.

There are plenty of options, a good place to start is to decide whether to have a transponder or just receive.

Hi Site Surfer
Thanks for your reply . I want a transponder AIS, looking at the budget end, Icom, Matsutec sort of thing, but so much of available info on how it work, fitting etc is frankly confusing and sometimes lacking the clarity to see I am buying the right piece of equipment. Thanks again for your input.
Jerry

 

[vyv_cox]

Can recommend Digital Yacht AIT2000. Fitted one last year to replace previous Icom receive only .

 

[[70521]]

My AIS lives down in the saloon, I never look at it. It is there for the benefit of friends and family (and gawd forbid the Coast Guard) . Friends so the know how long before I join them at the bar, family so they know that I will be back when I had planned and the CG if I seriously cock it up and push the wee red button on my DSC VHF.

I much prefer the MK I eyeball and look out at the amazing sea and landscapes rather than a screen (you miss the dolphins and pot markers if you do that).