Garmin 451-no position

[celtictemple]

I recently bought a Garmin 451 chartplotter (internal antennae). On firing up, it shows me the boat (on the hard) about 200m from the loch side which is correct but it does not show me the co-ordinates at the bottom right hand side. All the pictures in the handbook have the word 'position' and the co-ordinates under it, but I have nothing. When I pan the cursor over the screen it gives me the co-ordinates of the cursor but still not the position of the boat. Hence when I now connect up to the DSC radio, it says 'no position' on it and I assume it is because the GArmin hasn't recognised it either. Anyone any idea what I have done wrong. I have looked at the manual and I think all my settings are right but maybe someone can tell me how to set it so it shows the co-ordinates of the boat. Any help gratefully received.
Stuart Chalmers

 

[Philiz]

Don't know what you're doing wrong, if anything, but I can highly recommend Garmin support. If you drop them an e-mail they'll send you chapter and verse on what to do. Could be there's a problem with the plotter.

 

[oceanfroggie]

Simple fix.

When in chart view mode just turn the "data boxes" back on. It's propably in "full screen chart" mode (ie no data boxes visible). You can turn them on and off, and you can choose which data boxes to display and where (eg: speed, track, heading, SOG, COG, lat/long, XTE, ETA next, ETA dest, course, etc, etc). Use the "menu" key to customise the chart display.

 

[celtictemple]

Thanks-problem sorted! It was an amalgamation of everything you said. Once I got into the menus properly I noticed that you could go to different pages within each menu and hidden away was a toggle to turn position on!!! It worked. And yes, full screen did obliterate the position but now sorted. Next problem is to try and get it to speak to the midland Neptune DSC which is proving a nightmare.....

 

[PaulGooch]

Thanks-problem sorted! It was an amalgamation of everything you said. Once I got into the menus properly I noticed that you could go to different pages within each menu and hidden away was a toggle to turn position on!!! It worked. And yes, full screen did obliterate the position but now sorted. Next problem is to try and get it to speak to the midland Neptune DSC which is proving a nightmare.....

You might want to pop into the Garmin menu's and check the output settings for the port you are using to send the NMEA data to the VHF. Take a look at page 39 in the manual

http://www8.garmin.com/manuals/GPSMAP421_421s_OwnersManual-WW-_EN_.pdf

 

[celtictemple]

Thanks Paul-have done that but and set port 1 as NMEA std, then went to NMEA 0183 output and evrything was toggled on for all the settings so I assumed that one of them must be correct! I also went to the menu of the VHF and again all settings for GPS were toggled on althoughit was hard to determine. The last problem then is the wiring but I've tried every combination of the output wires with the 2 wires from the VHF but not a dickie bird..still persevering...