It is difficult to review the GlobalsatSD-502 without referring to it's predecessor the SD-501, but they are completely different...As the power for the SD-502 is taken from the host PDA there is no need for an on-board battery...Well the simple reason is that the patch antenna is good, but it only works well in one plane...This of course is a good thing...
An easy to use, compact SiRF Star III GPS Receiver with built-in memory from Globalsat...This stunning product, the GlobalsatSD-502 is a GPS Receiver with an SDIO interface and built-in memory, which provides an impressive data capacity...Devices listed above have been tested and proven to be compatible with SD-502...
GlobalsatSD-502 SDIO GPS Receiver for PDAs and Smartphones | Rated: 63 ... Globalsat has revealed that their new SD-502 SDIO GPS receiver unveiled at CeBIT ...
The replacement they sent me turned out to be the same bad unit I had just sent them...The bottom line, the techs very very courteous to talk to and it seemed that they were supporting a really bad product...If you're trying to get this device to work with your Treo 700w, forget it and look for a GPS that's (a) better built, (b) has better drivers, and (c) actually has a tech support dept that cares...