Handheld "hiking" units - Possibly suitable. Accordingly I do not recommend them for anything other than standalone use. In some cases they can be "hacked" to provide data, however this appears to be quirky and/or risky in the least. Most of these units do not output GPS data of any kind they are intended to be used as standalone units only. "Car Navigation" GPS units - Not suitable. Here's a breakdown of GPS units you are likely to encounter, and their suitability: Most GPS-enabled software applications will be looking for GPS data in this format. Specifically, the device needs to be able to output GPS data in a useful format most often this will be NMEA 0183. Be aware that only certain GPS devices are suitable for a broad-range of chaser/spotter applications. This is one of the most confusing aspects, mostly because GPS technology is being incorporated into many devices. Other specialized apps can use GPS data too: SpotterNetwork for instance can take your GPS data and use it to indicate your position to the NWS or other interested persons. Weather Apps - Popular applications like GRLevel3, StormLab and others can ingest GPS data to allow the user to see their position in relationship to weather features on a map. Using a GPS receiver with these apps allows for you to determine your position on a map, along with being able to keep track of route/distance travelled, current direction/speed, distance to waypoints etc.ΔΆ. Mapping purposes - Many chasers carry a laptop with them and run apps like Delorme Street Atlas or Microsoft Streets & Trips. I know that we have several GPS-savvy folks on here (Mark Blue comes to mind), and I invite anyone to add anything of value to the thread. Accordingly, I thought it would be a good idea to have a "one-stop shop" that could answer most of the common questions people would have. GPS issues must rank in the top 5 subjects in the Equipment sub-forum at Stormtrack.
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