Isn't it easy just to use an sd card? This also has the advantage that when the pda breaks in the cave (flooding usually) the card is usually still readable, so the data is not lost.
Maybe I have mis-understood the question.
Andrew
Anyone know of a simple way of browsing/transferring (PocketTopo) files from a PDA (I have a Dell Axim X51, running Windows Mobile V5) to a Mac (OS 10.11.1)?
Transferring files to a pc, and then to a Mac is an option (but I don't have a pc, and would prefer not to go via a pc emulator on the Mac).
Thanks
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