DECIBELS 
CALCULATION OF RADIO GAIN 429 
220 
: = 
200 
aa 
es ier 
be ocnet) O2)| A Pez a 
Pol vem rman groom weraeral Testy Poll 17 
eS Se 
€ c Y| h=0.1 
FIELD INCREASES EXPONENTIALLY 
: coc 
120 
a a ee 
TM TTT TTT COTY ZT 
A (3 
HT TI tT Le Aan fie a 
1 }-- 
mea 
i 
a4 
eT 4 
zai 
ee eat 
sae ie ane ee 
e antiliiim erro 
0.01 100 1,000 
see h, OR hy IN METERS 
Ficure 60. First mode height-gain factors for transmitter and receiver. 
Tass 11. 
Earth, Very Dry Soil. 
Quantities independent of polarization. 
€r = 4; ¢ = 0.001 mhos/meter; «, = 4 — 70.06 = 4(1 — j0.015A); «, —1 = 3 — j0.06X = 3(1 — 70.022). 
ij 600A 
me m Nu ING he =300!| = a 
30,000. 0.01 0.2154 0.0465 1.4 | 6667. 
3,000. 0.1 0.465 0.2145 6.45 | 666.7 
300. 1. 1. 1. 30. 66.67 
30. 10 2.154 4.65 140. 6.667 
3. 100. 4.65 21.54 645. 0.667 
0.3 | 1,000. 10. 100. 3,000. 0.0667 
0.03] 10,000. 21.54 465. 14,000 0.00667 
—— «—1 é—U|\Vee—t] leP 
2.05 x 10+ | 3(1 — 7.0.0002)| 3. 1.732 16. 
0.954 X 10-4] 341 — 70.002) | 3. 1.732 16. 
300. 104 | 0.448 x 10-4] 3(1 — 7 0.02) 3.0006 | 1.738 16.004 
30. {2.15 x 104] 0.205 x 10+] 3(1 — 70.2) 3.06 1.75 16.36 
3. | 4.65 x 104| 0.954 x 10-5] 3(1 — 72.) 6.71 2.59 52. 
0.3 105 | 0.443 x 10-5| 3(1 — 7 20) 60.072 | 7.77 3,616. 
0.03| 2.15 x 105| 0.205 x 10-5| 3(1 —j200) 600.015 | 24.5 | 360,016. 
