dhagps

I'm also experiencing very serious accuracy issues: If I switch my HCX on under "difficult conditions" like indoors, and wait for a position, I sometimes get an error in excess of 1 km. If I now move outdoors and start driving, the error persists, usually for around 5 minutes, even after the ephemeris data of many sattelites have now been downloaded. It reports reasonable accuracy, shows good sattelite signals and yet reports a position more than 1 km away from the true position. It reacts to turns and movement, so if I were not on roads, I would not have known that it is reporting incorrect position. If I turn it turns accordingly. The bahaviour is what I would call "false but believable" and is a very serious condition. I am now on my third unit and all firmware revisions up to 2.60/2.60 have all shown this behaviour. The error usually disappears after a while by making one sudden jump to the correct position. The Garmin agents in South Africa say they are following up, but I dont' see anything happening. A few emails to Garmin themseves were ignored. There is no doubt a serious issue, but it seems as if Garmin is not prepared to admit to this. I've used Garmin products outdoors for many years, and it has helped me out of difficult situations. Now I am losing confidence in an otherwise great little unit.