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In article , VHFRadioBuff
says... Hello all. I've been surfing the web, reading about APRS but I am confused about one thing. How does the GPS play into the whole thing? Can anyone give me a webpage with a good explanation of how everything links together (planing on using a Handspring Visor Prism with my KPC-3 and a cheap 2m mobile rig)? If anyone can suggest a specific GPS unit, that would be good. Email replies are welcome. The usual scheme is that the GPS receiver feeds its data to the TNC (in my case, a Kantronics KPC-3+), and the TNC interfaces with the radio involved to move the data. APRS, as its name implies, is mainly for position reporting. Also, does anyone sell a Palm pilot mount for the car? Have a look at http://www.smc-corp.com -- That's where I got my console mount and pedestals for the 'TechMobile' (http://www.bluefeathertech.com/kc7gr/thevan.html). Choice of GPS receiver is entirely up to the individual's finances and requirements. I got lucky with a bunch of surplus hardware, and locating some good deals on OEM modules, and ended up investing a little under $250 for a fairly high-end GPS setup that's WAAS-enabled. That figure included the antenna, which I got from a fellow who was selling them on Ebay a while back, and a DC injector (which was needed due to the antenna's bias voltage requirements -- 12V vs. 5). HOWEVER -- keep in mind that my setup was built specifically for high accuracy in a mobile environment, and took a lot of work to put together. It uses an APRS-dedicated single-channel transceiver (a converted Motorola Mitrek). In short: If you're looking for something in a handheld, my solution would not be a good one for you. ;-) Good hunting. -- Dr. Anton Squeegee, Director, Dutch Surrealist Plumbing Institute (Known to some as Bruce Lane, KC7GR) kyrrin a/t bluefeathertech d-o=t c&o&m "Quando Omni Flunkus Moritati" (Red Green) |