How far from bottom of dish must sensor be positioned
Dish antennas have the parabolic cross-section. This concentrates signals onto the sensor at focus of parabola. The dish antenna is 1 m wide and 20 cm deep. How far from bottom of the dish must sensor be positioned?
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If elliptical pattern of the whispering gallery is 92 feet long by 58 feet wide, how far from whisperer at 1 focus is listener at other focus?
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