gps datum

[mountain_biker14]

Hi, I have a realy old gps and was thinking of selling it to my friend but the newest datum on it is gsw73 (I think) and the newer gps's have wgs84 how can I change geocaching.com's datum to find caches to gsw73?

Edited February 26, 2009 by mountain_biker14

[+Map Monkey]

Just how old are we talking here? 20-30 years?

 

I would be shocked if it didn't have WGS84 as a datum, as it is the default datum. If the GPSr has NMEA out (or allows for data in/out) then there is a darn good chance that you have missed the setting somewhere.

 

If you list the Brand/Model, i'm sure someone can help with finding the information you need.

 

mm

[+myotis]

Have you tried sending it to the GPS? And how are you sending it?

[+EraSeek]

Hi, I have a realy old gps and was thinking of selling it to my friend but the newest datum on it is gsw73 (I think) and the newer gps's have wgs84 how can I change geocaching.com's datum to find caches to gsw73?

Simply put, I don't think you know enough about your unit. It should have wgs84. You are probably looking at wgs72. NAD83 is virtually the same as WGS84, so you can substitute that. However your unit should have all of these and more. Find the menu that takes you to settings and change your map datum to wgs84 or at least NAD83. Just poke around on your unit and you will find it. Even my very ancient unit has all of these.

[+paulmc]

My 1991 Sony gps has WGS84. The datum predates consumer gps units and is basically the default or standard datum that all gps units use. Even when selecting another datum it is still using WGS84 in the background.