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James A. Van Allen journal, December 1954-October 1955
Page 169
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E = 9 µv/meter, ([theta?] = 90 degrees). R = (1.7) x (10 exponent 6) meters (1000 miles) ------------------ ---------------------------------------------------------------------- Say 10 watts for 7 days (170 hours). 1700 watt hours = 38 lbs of silver cells . ! -- versus 20 lbs of Solar cells plus 5 lbs of batteries + 5 lbs of optics ? ----------------- Solar cells may improve by ~ 2.5 fold or more in next year. B.T.L.'s may be available, also in a lighter construction ! -------------------------------------------------------------------- (generous) sample requirement : 50 [ma?] at 135 v = 7 watts 1.2 amp at 1.5 = 0.7 transmitter = 10 watts -------------------------- ~ 20 watts.
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E = 9 µv/meter, ([theta?] = 90 degrees). R = (1.7) x (10 exponent 6) meters (1000 miles) ------------------ ---------------------------------------------------------------------- Say 10 watts for 7 days (170 hours). 1700 watt hours = 38 lbs of silver cells . ! -- versus 20 lbs of Solar cells plus 5 lbs of batteries + 5 lbs of optics ? ----------------- Solar cells may improve by ~ 2.5 fold or more in next year. B.T.L.'s may be available, also in a lighter construction ! -------------------------------------------------------------------- (generous) sample requirement : 50 [ma?] at 135 v = 7 watts 1.2 amp at 1.5 = 0.7 transmitter = 10 watts -------------------------- ~ 20 watts.
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