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Jim in NC wrote:
How much less bandwidth than with the commercial apps? What you thinking for a price? TAFs and METARs are simply downloaded and displayed. They're typically maybe a hundred bytes each, if that. My app has no real bandwidth advantage over the web browser if you know the URL for the TAF/METAR you want and you don't need to load some sort of a query page like ADDS (hint: try http://weather.noaa.gov/pub/data/obs...tions/K???.TXT, replace ??? with a station identifier in caps). RADAR images are GIF files that are typically 15-30k bytes each. Satellite images are 100k-300k jpg's. The original poster said he doesn't want graphics because he's paying a penny a kilobyte, meaning a 10-frame radar or sat animation could cost several dollars to view, which does seem unreasonable to me too. I feel less bandwidth constrained using wi-fi that I leech for free wherever I can and that I can see becoming more ubiquitous with time (on a tangent, I believe we'll have cheap wireless TCP/IP in the cockpit as well as in the coffee shop before long). I also feel that a picture is worth a thousand words and I'd rather see animated radar and photos than a TAF if I had to choose between them. The bandwidth savings gained using my app versus a web browser comes from the fact that I avoid the overhead associated with downloading the ADDS (or wherever) html page to query for a METAR or TAF and I avoid the html AND a java applet (which may or may not run on my Pocket PC anyway) to see an animation. I've also discovered that animating the ADDS prog charts (displaying them in timed sequence) gives an interesting "big picture" of the weather over the next few days that I haven't seen anywhere else. As for price, I'd charge the maximum that the market will bear. ![]() I'm toying with the idea of giving the application away for free, with some limited functionality, say maybe METARs but not TAFs and still images but not animation, and charging a license fee to add the ability to view TAFs, RADAR and sat animation, and to stay updated as data source locations change (or better yet, a modest regular subscription fee to motivate me to keep links current and to keep looking for new and interesting sources of data). As to what the fee would be exactly, I'm not yet in a position to gauge what the market will bear. What would you be willing to pay? ![]() -R |
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