I've been using the Holux GPSLim 236 GPS receiver with this project. I've been getting on with it very well, in terms of use, battery life and inetgration with the GPS software that I've been using. Therefore, I read with much glee that we've picked a winner as PDA Essentials Magazine (GPS Section) give it a score of 9 out of 10 ... "a quality product all round"
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