Hi all I have been searching for the gringo software for days now with no luck, poor mans survey as I'm trying to use a handheld Garmin to create ground control points for airial drone mapping projects which I can then post process to be engine the position using PPP. If there is anyone out there with a copy of this software even just the trial version so I can test the concept it would be massively appreciated!! I've attempted to use the gar2rnx java script but can't get it to work. If there is anyone who has a copy of gringo or some information on how I can get the raw GPS data from my garmin vista into rinex format it would be massively appreciated! King regards Gav