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Arv Evans
开云体育Stan AK0BSome time ago a couple of us were discussing something similar, but using QRSS beacons with GPS for launching in ocean currents to see where they go.? Our approach was to use 3 inch diameter PVC drain pipe as the chassis with 3 inch pipe caps glued onto each end.? Adding a battery pack at one end would keep them floating upright so an antenna on the opposite end would be above water most of the time.? With a reducer fitting the antenna could be installed inside a length of smaller PVC pipe for a fully water-tight system.? This discussion progressed to talking about wave- action charging and possibility of sending commands to an accompanying receiver for remote control, including wave-action propulsion and associated navigation. This then led to the absurd, like making a geo-cache that floated around in the ocean. Your glass bottle might lend itself well to battery charging via an internal solar cell if you leave one side exposed to the sun.? With microprocessor control you could make it sense battery charge and turn on only when there is adequate power for at least one ID sequence.? ID could also include telemetry information like temperature, battery state, solar intensity, wind speed, and so on. Arv K7HKL _._ On 07/31/2011 01:47 PM, w9ifz wrote: ? |
