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Graphics Interchange Format  |  1996-06-30  |  2MB  |  2086x2408

Labels: barrier reef | book
OCR: Parabolic Antenna Beamwidth t=frequency megacycles in 8=beam half width in degrees points between D=reflector (ft) diamete: 30.000 0.01 300 22000 0.02 200 0.04 10.000 ?1: 100 .000 B0 . .000 ,000 1,000 006 400 00 200 100 70,000 {deg) Fig. Nomogram for determination of beam- width (deg) between half- power points for parabolic reflector freguency dearees

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