NASA Clipper GPS repeater

[MM5AHO]

I bought one of these devices recently and can't get it to work. (new)

It seems pretty simple, only a three wire connection, and a clear diagram on how to wire it.
But connecting it to two different GPS sources (NMEA) I can't get a displayed position.
It does show a message (getting GPS data" (or something similar), but never gets any further.

Any suggestions?

 

[Razorfish]

I had the same problem and it turned out that my GPS didn't output the required NMEA sentance. I can't remember which one it was but I replaced the GPS and it worked fine.

 

[GrahamM376]

With some GPSs you can change the nmea output in the menu.

 

[yachtbits]

what GPS are you using?

Kevin

 

[TSB240]

dont know if its the same problem I had?

http://www.ybw.com/forums/showthread.php?t=299277&highlight=nas+repeater.

They dont like garmin for sure!

 

[rhumlady]

Interesting as I have been speaking to a guy in the yard about the NASA GPS repeater this afternoon. Mine works fine out of the box with my Magellan GPS320 and he reckons his works fine with his old Garmin.

 

[Jassira]

I bought one of these devices recently and can't get it to work. (new)

It seems pretty simple, only a three wire connection, and a clear diagram on how to wire it.
But connecting it to two different GPS sources (NMEA) I can't get a displayed position.
It does show a message (getting GPS data" (or something similar), but never gets any further.

Any suggestions?

I have a NASA repeater connected to a Garmin 152 which also feeds a Silva S15 VHF.

I had problems getting the GPS to talk to both the repeater and the radio. The problem turn out to be the lead from the GPS to the repeater, it used the same type of lead used to connect the GPS to a computer serial port.

The 9 pin D plug on the lead had the NMEA output connected to it at the expense of the plug that connected into the radio, so the radio now had no NMEA output. Once I'd rewired it so both plugs had NMEA out all was once again sweetness and light.

Bear in mind I'm writing this sitting at home on warm settee in front of telly and trying to remember back to time spent bouncing around in Poole harbour trying to connect wires I could barely see, so feel free to replace the terms "plug" and "NMEA output" for "socket" and "NMEA input".

good luck

 

[Lodesman77]

You don't say which GPS you have, but Garmin by default uses a proprietary format - you have to go into the setup menu and change the output to NMEA.

.

 

[MM5AHO]

The GPS source is an Evermore SA320
see here http://www.wavetechnology.co.uk/evermore-sa920-rs232-smart-antenna-p-190.html

It apparently outputs NMEA-0183 v 2.2 at 4800 bps baud

It feeds directly into the VHF radio, with a seperate plug/socket for connecting to a PC.

Have also tried this GPS repeater on a different GPS source that my son had at home, but I don't have that any more to get the name etc.

Thanks for ideas so far

 

[TSB240]

The Nasa repeater needs nmea 2.0 or later and must receive RMB RMC and GSA messages via NMEA (from http://www.nasamarine.com/pdfs/Clipper GPS Repeater.pdf)

The evermore only provides CGA GLL GSA GSV RMC and VTG sentences
(from http://www.emt.com.tw/webPage/produ...=6&PHPSESSID=fb2e699b58a430cdc8320dacd53021a0

I am afraid you wont get it working without RMB so wont ever work with the evermore smart aerial.

Only solution is try another gps source but make sure it has RMB RMC and GSA sentences.

Steve

 

[MM5AHO]

Thanks. That clears that up!

 

[Razorfish]

Ah yes that was my problem too. Shame really as the Furuno GPS is really nice.

 

[GrahamM376]

Ah yes that was my problem too. Shame really as the Furuno GPS is really nice.

My NASA repeater works fine from the Furuno.

 

[PhillM]

The Nasa repeater needs nmea 2.0 or later and must receive RMB RMC and GSA messages via NMEA (from http://www.nasamarine.com/pdfs/Clipper GPS Repeater.pdf)

The nasa info is a bit confusing. I bourght one and its advertised as working with NMEA-0183 but the documentation that came with it and what I see online says Nema 2.

Connected up a Garmin 152 set to NMEA-0183 and it worked first time.

The only thing I found confusing is the way that the cable sheild is the negative. Once I got that sorted, no problems.