Magellan Map 330 GPS
Submitted: Friday, Jan 21, 2005 at 09:40
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Matt (W.A.)
Hi All,
Just a quick one can someone tell me which map datum I should be using on my Map 330. Currently I’m using WGS84, but have noticed Aus Geod '66 is also used??
Any help would be greatly appreciated.
Reply By: Member - Craig M (NSW) - Friday, Jan 21, 2005 at 10:30
Friday, Jan 21, 2005 at 10:30
Hi Matt,
Going by the book GPS Vehicle Navigation in Australia (which I am currently reading trying to learn how to work my etrex and laptop for moving map displays etc)
All Australian maps from 1999 onwards should use GDA94 which is the equivelent to WGS84. (the difference being only a few cm).
The book goes on to explain the difference between AGD66 and WGS84 and even shows the difference in metres.
So I guess it all depends on the age of the maps you are using.
The book mentioned is
well worth the money if you are new to GPS.
Cheers
AnswerID:
94231
Follow Up By: Matt (W.A.) - Friday, Jan 21, 2005 at 10:37
Friday, Jan 21, 2005 at 10:37
Excellent,
Cheers Craig, thanks for your help.
FollowupID:
353226
Reply By: Utemad - Friday, Jan 21, 2005 at 11:43
Friday, Jan 21, 2005 at 11:43
You need to use the same datum as the map you are reading. New maps may be using GDA94 but I am betting that not all your maps are new. Even 'new' maps may not have been revised since the 1970's so they will still be in AGD66 or perhaps something different.
I am currently scanning maps for OziExplorer and find it a pain that Hema and some others don't even put the Map Datum or Map Projection on their map at all. Government maps seem to be pretty good for giving you that info though.
AnswerID:
94246
Reply By: V8Diesel - Friday, Jan 21, 2005 at 13:54
Friday, Jan 21, 2005 at 13:54
Good question Matt. Always used WGS84 which seems to work fine, but if GDA94 is the new system and only a few meters out, does that mean it's backwardly compatible?
In other words, should I swap my GPS to GDA94 and get up to date, or stick with the old WGS84 which I know works?
Cheers
AnswerID:
94267
Follow Up By: Greg Harewood - Friday, Jan 21, 2005 at 15:16
Friday, Jan 21, 2005 at 15:16
V8Diesel - GDA94 is only centimetres different from WGS84 and therefore can be considered the same for handheld GPS users. There is therefore nothing to gain (in this regard) by upgrading to a unit with GDA94 available as a display datum. Brand new Magellans dont even have GDA94 as an option...but as mentioned, it doesnt matter...though I suspect it confuses a few people.
Cheers
Greg
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Follow Up By: V8Diesel - Friday, Jan 21, 2005 at 15:27
Friday, Jan 21, 2005 at 15:27
Thanks for that Greg, it's certainly had me confused for a while. Much appreciated.
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Follow Up By: Member - Davoe (WA) - Friday, Jan 21, 2005 at 15:38
Friday, Jan 21, 2005 at 15:38
can you upload the update into your gps? the guy at the local camping store said there have been a few updates to my etrex software and offered to download them for me..... but I habnt got around to it. Try the magellan www
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Follow Up By: Utemad - Friday, Jan 21, 2005 at 16:44
Friday, Jan 21, 2005 at 16:44
Updating your Extex is quite simple. My Etrex is updated and has a GDA option in the datum list. I presume this is GDA94. It make no difference from WGS84 so it must be.
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Follow Up By: Member - Davoe (WA) - Friday, Jan 21, 2005 at 16:52
Friday, Jan 21, 2005 at 16:52
Ute mad it may be simple but I dont have the cords to do it but you have inspired me to take it in Kalgoolie Caravan and Camping. I have named them coz they are very helpfull and within reason know their products. To get it updated
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Follow Up By: Utemad - Friday, Jan 21, 2005 at 16:58
Friday, Jan 21, 2005 at 16:58
Davoe,
Not sure if the place you bought yours from does the same however Johnny Appleseed will update it for free if you bought it from them. Could be worth a try.
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Follow Up By: Matt (W.A.) - Friday, Jan 21, 2005 at 22:38
Friday, Jan 21, 2005 at 22:38
Thanks everyone for the info i will also look at updating my Software of the Magellan Site.
Cheers
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353336
Reply By: Member - Craig M (NSW) - Saturday, Jan 22, 2005 at 00:59
Saturday, Jan 22, 2005 at 00:59
Hi Everyone,
here is a interesting website for users of Garmin GPS units.
GO HERE
Cheers
AnswerID:
94366
Reply By: Matt (W.A.) - Saturday, Jan 22, 2005 at 20:00
Saturday, Jan 22, 2005 at 20:00
Hey Everyone,
Just Downloaded and Uploaded the Latest "Software" Update to my Map 330 and WOW what a difference in the Layout of the Screens its Great they have added things like Average Speed and Max Speed, changed the look of the compass too many things to mention and I haven’t had a look through them all yet so without sounding like an Ozzie Icon "Do your self a Favor" and download the update if you have a map 330
well worth it.
AnswerID:
94444