Hema or what?

Other than in a denial of high accuracy service by encoding the satellite signal to allow only lower accuracy or where your GPS receiver is jammed there is very little difference in GPS receiver performance.

The greatest noticeable errors are in the details on the map images you get with the various systems. Some use maps as published on paper by recognised survey/mapping organisations so are just as good as your paper map.

Greatest difference from paper maps, compass, sextant and chronometer is that if you break the iPad or other tablet you lose the lot and will struggle, short of burning the paper map you will be able to struggle on.

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Originally Posted by slug_burner

Other than in a denial of high accuracy service by encoding the satellite signal to allow only lower accuracy or where your GPS receiver is jammed there is very little difference in GPS receiver performance.



The greatest noticeable errors are in the details on the map images you get with the various systems. Some use maps as published on paper by recognised survey/mapping organisations so are just as good as your paper map.



Greatest difference from paper maps, compass, sextant and chronometer is that if you break the iPad or other tablet you lose the lot and will struggle, short of burning the paper map you will be able to struggle on.

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totally agree and for this reason I carry a triple backup and use Hema with 25k topo, Hema Explorer, Google and MudMaps to cross check if required. depending of state, area and wether I have reception. has served me very well and got me out of situations I would have struggled with a paper map. However still would love to learn how to use compass and traditional navigation tools and its high on my to do list. Will never forget when I went hunting with a fried and tour guide around Winton and how he got us around 4 days and most of the nights just by watching the stars it was quite impressive to me.

My iPad has worked flawlessly navigating me through the deserts with Memory Map. Never off the tracks at all.

Ive Used the Hema HN5i for a fair few years, I found it a bit 'hard' to use in the 4wd mode, and 'bearable' as a road GPS, Ive since purchased second hand from my uncle a Nexus7 (2012 model) running Memory map and allt he Hema maps downloaded to it (as he 'upgraded' to a Hema HN7) I am yet to use it so cannot comment, but he seemed to think it was pretty darn good, I think he just got sucked in by the Hema guy at a show and as such got the HN7.
also the Nexus is running a blutooth glonas external GPS even though it has GPs built in.

I plan to root the device and install a Custom Kernal to allow high current charging, as while using blutooth it still looses charge while on charge.
at the same time Im thinking ill hook up a Bluetooth OBD2 adapter for monitoring the car. also found you can get the TomTom app for under $40 which can download all road maps locally to the device so you do not need data connection also. I might purchase this for road navigation duties.

anyone want to buy a HN5i?

Leroy.

EDIT:
should add I have been a long term apple Hater, however got a Retina Ipad mini with 4G for work, the thing just works flawlessly also, no plans to use it as A GPS though as its way to big, the Nexus 7 is even pushing it IMO to be used as a Car GPS.