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Why the wing and developing it or similar.? what wrong just using something like big weather balloon. solar cells on top transceiver below and tethered to a truck with about 300ft cable ? You don't need to go very high to get cell coverage over a city or a rural area,.. It simple to transport to any area needed and cheap.
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For civilian emergency use in calamities 300ft is more than adequate.
For military no matter how high you fly it ,unless you going way up into the stratosphere a casual blast from any jet fighter plane will destroy it. As its stationary and flimsy construction about 1.2 seconds of gunfire will destroy it.
Also I think they now have satellite's in high orbit that already do what you are wanting??Comment
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I cant give you any long term emperical info but im very happy with our semi flex lightweight panels on our solar rickshaw project so far. Posted in Solar living section. We are not using it yet as a motor power source but more for 12v acsess. power. I feel when we come up with more effecient batteries or motors we are going to struggle self powering. but i find it fun and ihope you do too and maybe we can help each other. good luck on your project.
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Well John then all I can say is you do not know much about low power UHF and Microwave radio frequencies if that is what you believe. If that were true no city would need more than one cell tower. In every city of the USa every downtown high rise building has it own cell radio installed in it just to serve that building.MSEE, PEComment
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Other than the ideas presented before, what you want is LiFepo4, and NOT LiCoo2 batteries under your ride. That is, put Lithium-Phosphate (Lifepo4) into service rather than unstable Lithium-Cobalt (laptop / cellphone chemistry). Lifepo4's are MUCH more stable and safe than LiCoo2. There are many lifepo4 manufacturers out there now, from duct-tape garage setups, to quality units. The EV community has the better ones and they've been out for years now. Of course, like any battery you can abuse them if you lose respect.
Charging a Lifepo4 is not rocket science. You can use a simple solar charge controller, provided you set the upper voltage limit properly. Ie, for a 12v application, one can simply run at 14.2v or so and be in business.
In fact, Genasun started from something as simple as this. While a standard pwm charge controller worked to charge his lifepo4, it suffered a quality failure, and Genasun refined the quality and more exacting charge capabilities. But you CAN put an existing solar charge controller into use with lifepo4 as long as you set voltages properly.
While I desire to use a lifepo4-specific charge controller eventually, my lifepo4's are doing just fine with a menagerie of Morningstar pwm controllers.Comment
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I never said to only use ONE balloon/transceiver.?? the reason as you should know that there are so many cell towers is because so many users. Its got almost nothing to do with the power of the transceiver in the tower... Example how far away from a tower can you use a cell phone from in the ocean??At least 5lkm. If you had a city the size of Dallas and only 5 users then you would need very few such balloons. even for Facebook users., And why would you spend endless money anyway on developing this new infrastructure in the sky when towers on every building work just fine and not subject to the problems you will encounter doing to transceiver in the sky...Its a dam site easier to climb a tower and repair a device that climb a 156,000 ft rope ladder to your wing in the sky. And if your argument is military use its a lot easier to shoot down 267 stationary wings in the sky than towers on ground zero.
Your answer is ridiculous in the extreme..and totally out of wack to what I was replying,.
In an emergency situation which is most likely to need a transportable cell type transceiver is in a rural or semi rural area with a limited number of emergency /rescue people to use it..
Its not a set up for 100,000 teenagers needing their daily fix of Facebook.Comment
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I dont know if you have heard of them but there are way up there in the big blue sky communication satellite's.. If you have a Sat phone a phone that is similar to a everyday cell phone you can communicate with these satellite's from just about anywhere on earth including the 70% of land mass in USA that has no usual cell phone service..Comment
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BS John, I work with Cellular companies on a daily basis and use to be an RF engineer. We still do the propagation studies. Cellular works on 800, 1900, and 2100 Mhz which is strictly line of site. On an ocean depending on atmospheric conditions about 2 to 4 miles miles depending on fog and rain. Cellular Carrier is very low power at 20 watts max with low traffic. More traffic less power down to 5 watts. With CDMA today you can carry 512 calls on a 5 Mhz carrier and 2560 calls on a 15 Mhz carrier.
FWIW Dalls is a lot larger than you give it credit for. The metroplex if viewed like a circle is some 60 miles or more in diameter, covers 12 counties, and some 9,286 square miles .MSEE, PEComment
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We are doing research. It looks like we are leaning towards these flexible as a partial solution to power. We wont be able to completely charge the battery in a decent time but we have a few other ideas. I am going to check out the solar living section and share some info that I findComment
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I agree this is the same information I found in my research. Our problem is just trying to generate enough energy to charge the battery in a reasonable amount of time. We have some ideas we are researching including a stationary solar power charging center. We are also thinking of using 2 batteries one charging from the solar panel and the other being used.Comment
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