AnswerID: 219795 Submitted: Sunday, Feb 04, 2007 at 23:10
fruers
replied:
I spent a fair bit of time researching
GPS and I've been wanting to share my thoughts for a while.
My shortened opinion:
If you're talking about ultimate then PDA is far ahead of the handheld
GPS units, which i leave a lot to be desired.
The most powerful, versatile and thorough option is a PDA running OziCE and (something like) TomTom with a
GPS receiver. This requires that you're reasonably cluey and don't mind doing a bit of work preparing your trip and maps. If you are a bushwalker and want to take a
GPS walking, get a cheap handheld (i.e.
eTrex) as the receiver for your PDA.
If you only want to use the unit in a vehicle to follow known tracks, the easiest option is the eXplorist XL.
My long opinion:
The real value is in the maps, base maps on standalone
GPS are useless for our purposes, you'll immediately have to go out and buy extra maps (or get a travellers pack). In my research the Garmin map offerings (tracks4aus) didn't come close to being usable, this ruled out Garmin for mapping
GPS right from the start. Magellan has good map offerings in DiscoverAus Topo but i found that the explorist 400, 500 screen was too small to be useful, the main downfall being that detail only comes up as you zoom in, so you lost the big picture. The other downfall was that the maps only come on SD card which left no obvious way of backing up the maps, if you lose the SD card (physically or due to corruption) do you lose your whole mapping system? Someone else might correct me on this, but i don't like supporting companies that do things like this, why not just sell the CD?
With a bigger screen the explorist XL seemed OK (not good) in relation to the zooming problem above but i found the joystick a bit dicky to use, it felt weak and the unit in the
shop was broken (wouldn't scroll to the NE) which wasn't a good advertisement for the durability. In terms of hiking the unit was too big and power hungry to be useful, which leads me on to the old maxim of carrying paper maps and compass, which you should be carrying anyway, IMHO this makes MAPPING
GPS units irrelevant for walking. You've got a map/compass and know how to use them. Anyone doing proper off-trail walking would find mapping
GPS cumbersome, with Magellan being the only option that might be useful. The useful functionality for hiking is keeping a track log (i.e. for later reference or backtracking) and the convenience of knowing your lon/lat. which you can get in a more power friendly
eTrex for $200.
I walked out of the
shop feeling kinda despondent about the whole
GPS thing, which is when i started researching the PDA option. So my choice came down to the XL and the PDA.
eXplorist XL
* Has reasonably good maps for driving and even though the maps aren't useful for off-track walking it still has the most basic functionality (lon/lat., waypoints, etc)
* Is a single unit so not as much stuffing around with cables and such
* Power hungry when not running from external power source
* Limited to maps which are in DiscoverAus
* Large size for walking
* Clumsy controls when driving
PDA with
eTrex receiver and OziCE
* Has whatever maps you can buy/scan/download/"borrow" from a mate
* Easy to control while driving (zoom, add waypoint, switch between maps)
* You get the most useful walking functionality in the
eTrex in a much smaller and less power hungry unit
* You can load auto-routing software like TomTom, a lot of people don't get a
GPS for this functionality (i didn't) but it is really useful, it has a lot of roads in it and you can use it to calculate your distance and ETA to
places, sometimes i load it up just for that and then switch back to OziCE. If you've got it, you'll probably find yourself using it to get around civilised areas.
* The PDA can be used for myriad other things (never imagined using one but find it pretty useful)
I have the following hardware setup:
HP iPaq 2490 - $550
Garmin
eTrex - $199
Combined power and data cable - $99
RAM mount for PDA - $88
Mount for
eTrex - $59
2GB CF card - $89
You can then add your software and maps on top of that. I've been told you can get away with an iPaq 2190 for $450 and you can save with a smaller CF card and just sit the
eTrex on the dash (gets a bit hot).
I'm embarking on a long driving trip around
Australia. I'm also a bushwalker and i like things to be as versatile as possible so when dropping money on a
GPS i wanted some crossover for walking and my opinions are based around that. I've taken it on a couple of trips and i'm really happy with how it performs. One thing that i'm curious about is how the PDA will stand up to dust over time.
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