Hema

Hi Brad
I have the first Hema GPS and it still works fine.
It sounds to me that you may have to check the box with the correct DATUM to get yourself back on the track.
As you said it is out up to 800 metres and that is about the distance an incorrect datum can be.

Yep thinking the same as Pinko here.....WSG84 you should be on I think it is. I did a 20000km trip across Aus in 2009 with my HN5 running Oziexplorer with Hema maps and they were spot on. Route 66 isn't the best of street directories but I've not found it to be wrong on too many occasions. Newer roads are sometimes not there (ie built in the last 5 or 6 years) but in the main it is OK....and mine is yet to crash once.

Brad

There is no way that you can compare the software that you received with your Navman 75 and that which is used in the Hema Navigator. We have used our HN5 in many remote locations and there is no difference in the accuracy when compared to when using Ozi on a laptop. This image from when we went across the Anne Beadell was spot on every time.

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When you compare the image above, you will see that there is no way that you can compare what you have on your Navman and the quality on the Hema. You will find that will be far more people that are very happy with the way the Hema works compared to those that have had problems. I also note that if you had problems with your Navman it would be sent back time after time and from the dealings that we have had with Navman at work, I know that there would be no way that they would replace your unit, only if it was DOA (Dead on Arrival) for the first time that you turned the unit on.

Credit where credit is due, the Hema are a top unit.


Stephen

I had no trouble with the 4wd and Topo maps. They both worked no problems and were spot on with accuracy. It was just Route66. I tried the new Street today and it's amazing. So much more info.