Nasa ais sart radar gps connection.

[Laysula]

I have aquired a nasa ais as above and I am trying to connect it all up. I can connect the power and the aerial but I am struggling to come up with a way to connect the Gps. The boat is presently kitted out with a Raymarine rl70c plotter/radar and st50 instruments and repeaters. Is there any way I can take off a gps feed from any of these instruments?

 

[RichardS]

If it's an AIS transmitter/transceiver/transponder then the answer is that you cannot take a feed of any instruments but must use a dedicated GPS antenna/receiver.

If it's an AIS receiver then you can take a feed provided the digital format is correct or is converted if not, e.g. NMEA0183.

Richard

 

[PetiteFleur]

I managed it with the output from the Garmin GPS - and from memory it also supplies the DSC radio - I can't remember how I did it though, just paralled it all up from memory - probably not the 'correct' way but it works...

 

[Laysula]

If it's an AIS transmitter/transceiver/transponder then the answer is that you cannot take a feed of any instruments but must use a dedicated GPS antenna/receiver.

If it's an AIS receiver then you can take a feed provided the digital format is correct or is converted if not, e.g. NMEA0183.

Richard

It's just a reciever.

 

[moomba]

I have aquired a nasa ais as above and I am trying to connect it all up. I can connect the power and the aerial but I am struggling to come up with a way to connect the Gps. The boat is presently kitted out with a Raymarine rl70c plotter/radar and st50 instruments and repeaters. Is there any way I can take off a gps feed from any of these instruments?

Hi , I have all nasa on board my boat so may be able to answer
For my GPS repeater I took an NMEA 183 form the DSC VHF (GPS) to the GPS repeater , this in theory should only be one wire
all Nasa Instruments use Blue for NMEA data wire or on the back of your device there should be an connection for you individual GPS antenna if you have one. (what are you using for GPS will also help answer the question)
I do not know much about the Raymamrine , but they should all be running 183 for their age
How is your chart plotter getting a gps signal (internal)
If you dont have the manual it is here
https://www.nasamarine.com/wp-content/uploads/2015/12/AIS-Plotter.pdf

Does you Plotter have lose wires for connection to other listeners or is it all internal sockets
this info might help others come up with other solutions

 

[pvb]

I have aquired a nasa ais as above and I am trying to connect it all up. I can connect the power and the aerial but I am struggling to come up with a way to connect the Gps. The boat is presently kitted out with a Raymarine rl70c plotter/radar and st50 instruments and repeaters. Is there any way I can take off a gps feed from any of these instruments?

The RL70C has an NMEA output, which includes the GPS position. You could connect this output to the input of your Nasa device. The Raymarine website has user manuals giving the details, if you don't already have one.

 

[Laysula]

Ok thanks. I have been down and had a poke around on the boat this morning and I have found the feed to the dsc vhf. Two wires labled GPs+ and GPS- the Nasa requires just one. anyone know which one?
I do have the installation instructions but it is unclear.

 

[moomba]

Ok thanks. I have been down and had a poke around on the boat this morning and I have found the feed to the dsc vhf. Two wires labled GPs+ and GPS- the Nasa requires just one. anyone know which one?
I do have the installation instructions but it is unclear.

Can you give the make of the Radio and we can google and try and help

 

[Laysula]

It's a raymarine radio but the lead is the gps feed to it from I assume the plotter. It is this end of the lead that is labled. Not the radio end.

 

[Laysula]

Sorted now. I read the instructions again. (Properly) Does it matter what grade of co ax cable I use?

 

[RichardS]

Sorted now. I read the instructions again. (Properly) Does it matter what grade of co ax cable I use?

NMEA doesn't need coax so I would think that if you want to use coax then any grade will do.

Richard

 

[PaulRainbow]

Sorted now. I read the instructions again. (Properly) Does it matter what grade of co ax cable I use?

Don't use coax for NMEA wiring. Just needs a length of multi strand wire, nothing too heavy needed. Stranded CAT5 is fine.

 

[Laysula]

Sorry I didn't make myself clear on that last bit. GPS is all sorted now, it's just the aerial connection. I have a glomex splitter and just need to build a patch lead from the ais plotter to the splitter.

 

[DAVAIS]

don't think you need coax for your job.

 

[Daverw]

RG58 would be fine to use, you need 50ohm, get cable and connectors at the same time to make sure there all the same size as it can get confusing.

 

[Laysula]

Cheers. Yes it's all done now. I bought a patch lead of e-bay with the correct fittings on each end and 50 ohm co-ax to go between the ais radar and the glomex splitter.