Where's my SiRF III logging GPS?
Early last summer I purchased a DeLorme Blue Logger GPS in hope of recording logs of my bike routes which I could then view on maps, process into cue sheets, or analyze for climbing and other fitness data. I was also taken with the idea of using the device with my PDA for navigation purposes. The Blue Logger is a neat product and I'm sure it serves many people well but it has disappointed me in both of my goals.
The main reason in both cases is that the Blue Logger simply isn't good enough at acquiring or holding a fix to produce a steady, useful log. It doesn't help that the bundled Street Atlas USA 2006 Handheld software is quite poor in several key respects, or that my PalmOne Tungsten T5's screen isn't cut out for dashboard use, but really, it's the tracking, stupid.
So it's been a year and I've done some more homework. It sounds like the newer SiRFstarIII GPS chipset is the way to go. It acquires more satellites more quickly, consumes less power, and for some people at least actually gets a decent fix indoors. Sounds great, and the devices that use this chipset are reasonably priced, but why don't any of them do logging? Am I overlooking something? SiRF III can apparently be built into a tiny little SDIO device along with a decent chunk of flash RAM. It has sophisticated computational power available for calculating position and time from the satellite signals. Surely as long as it's on it wouldn't be too much harder to log a trace in the GPS unit itself. The GPS receivers 10 - 17 hours on their own batteries; it makes much more sense to do the logging there than to carry around a second device (PDA or notebook computer) whose batteries will surely die far sooner. And yes, I am pushing the limits of those batteries. I took the BlueLogger with me on some six- and eight-hour bike rides last year (not counting rest stops).
Can anyone point me to a logging SiRF III (or RFMD) device in the sub-$150 range? The BlueLogger's logging capabilities are a good model of what I'd like: configurable logging based on low and high speed motion, configurable cut-off or wrap-around on reaching the memory limit, logging of ~50,000 data points. I'd be happy to sell the BlueLogger and its software to someone who wants it more. The device does have a following and I'm sure it works very well in other regions, but I'd really like something better suited to my purpose.