Re: Magellan Crossover (2500T) vs. Garmin 478 vs. ??

Jack Erbes wrote:
David Chamberlain wrote:
Jack Erbes wrote:
I quit using Magellans with the Meridian models but on those, there were no USB connections on the GPS receivers yet so building maps to the card in a reader was a wonderful way to be able to do it. It was much, much faster than sending the same map to internal memory via a RS-232 serial port. And you could have much larger map files on the SD cards too.

The map file limit with Mapsend is about 246KB. However you can put as many region files on the SD card as the SD card will hold. You just have to use them one at a time. This would be a problem if I could be in two places at once, but I'm still working on that problem.

Are you sure about that map limit? I was using much larger maps than that on my Meridian Marine and Meridian Color.

I had DirectRoute North America V3 divided into 14 regions that ranged in size from 3.5 MB to 124 MB. Those 14 regions covered the Continental U.S., Alaska, Hawaii, and Canada, with a total storage requirement of about 1.6 GB. If I remember right, the maximum region size allowed was about 125 MB.

I was also using BlueNav charting and that was a little more of a problem in use because only one filename was recognized/allowed in use. The chart regions were not very large so I had to carry a PDA and un-name and re-name regions as I proceeded in order to travel across two or three regions a day. Seemed like a minor inconvenience at the time in comparison to not having the mapping. The Garmin 76Cx I'm using now does all the region changing on the fly.

I have the entire USA (lower 48), in region files that generally include one state, or in some cases 2, 3, 4, or 5 states, depending on the state sizes and shapes (try getting a rectangle around California without getting all of Nevada, for example).

Is that the DirectRoute NA V3 mapping? If so, your region sizes are probably similar to what I mention above.

No, I'm talking about the Mapsend Topo 3D maps. The road navigation maps are already built into the road navigation program, there is nothing to download.

--
David Chamberlain - ASAPM Moderator
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