At 09:02 PM 9/20/98 EDT, John wrote:
>I doubt if you could get FCC approval for radar. But there are many other
>to get this goal achieved. One would be to measure round trip radio time.
>Then, divide by the speed of light and you have your distance.
>For instance if distance is about 100 miles, then this is the scenario:
>measure the delay: 1 millisec, or .001 sec.
>speed of light 186,000 miles per sec.
>186,000 miles/sec * .001 sec = 186 miles.
>Since this is round trip, divide by 2, and your distance is 93 miles.
>You may need an oscilloscope for this measurement.
>In effect this would be active radar, light an airplane transponder.
>To make the electronics simple, just use a crossband repeating HT, and leave
>it on. periodically send a tone. When the tone comes back, you can measure
>distance on an oscilloscope.
>Just my theory.
>Of course I have never done such a thing, so don't take my word for it.
>John Marcus, MD.
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