Accessable Northern Latitudes

Server sky is theoretically visible from 60° north latitude; however, that places it on the horizon elevation zero degrees, with hundreds of kilometers of attenuating atmosphere between the ground receiver and space.

Assuming 70 GHz, with 0.7 dB/km attenuation and a density lapse rate of 1/7km, the attenuation due south versus latitude is:

lat

elev

dist to

ss angl

attn

relative

deg

deg

ss km

deg

dB

loss

0

90.00

6418.0

0.00

4.90

1.00

5

80.07

6466.1

4.93

4.97

1.02

10

70.36

6608.1

9.64

5.20

1.07

15

61.04

6836.9

13.96

5.60

1.17

20

52.24

7142.7

17.76

6.19

1.35

25

44.00

7513.9

21.00

7.05

1.64

30

36.34

7938.7

23.65

8.25

2.16

35

29.23

8406.0

25.77

10.00

3.24

40

22.62

8905.9

27.38

12.66

5.97

45

16.46

9429.7

28.54

17.08

16.53

50

10.69

9970.0

29.31

25.67

119.29

55

5.26

10520.4

29.74

48.26

21654.10

60

0.12

11075.6

29.88

76.25

&inf;

Places

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Latitudes (last edited 2014-07-31 22:58:53 by KeithLofstrom)