Garmin compatibility is extremely limited - we are only able to import depth and position data from GPX files of Garmin trails. ReefMaster cannot generate maps for display on modern Garmin units and cannot read Garmin sonar log files, unfortunately.

Dang! Not what I was hoping to hear... So I cannot push mapping data back into the Garmin, nor review side scan data on the computer. Reefmaster could still take the depth and location data via the NMEA for live data collection though? I'd be okay with having the laptop on the boat with Reefmaster open at all times if that's the case. Thanks for the quick and honest reply Matt.

Sorry I don't mean to bug you Matt, but has it been tested to have the NMEA output from a Garmin to build a map in Reefmaster in real time? I would assume this is possible?

Sorry for late reply - yes, should work fine with any live NMEA0183 data source.

My garmin makes .RSD -files. How do I import depht data from these files to Reefmaster?

We don't support Garmin .RSD (sonar log) files at this time, although we may do so in the future.

You must convert the files into the gpx format, look here: www.tacklefever.de/index.php?topic=4320.0

Thanks! AVGPS dont seem to support .RDS files? I managed to convert my .RDS to .GPX with Garmin Home Port and import .GPX to Reefmaster but for some reason every depht is 0 even depths are correct at Home Port. GPS is not very accurate also because it shows my points 20m+ area even I used only one ice fishing hole. Any advices?

You can build great maps for Garmin from ReefMaster Data and Pictures, even 3D if you want ;)

BUT, it's a LOT of WORK... And you need some good knowledges...

Here is a screenshot from my Garmin Rino 530Hcx, of a bathymetric map that I've done, see attached picture...

fvignola wrote: can you tell us something more about the process, please?

How to convert .rds files to .gpx? Now outcome is only 381kt from 400MB files and that is not enough

Rsd to csv. cameronbodine.github.io/PINGMapper/docs/...ed/Installation.html