APPENDIX 499 
NEAR SAN DIEGO 
@ SHIP WIRED SONDE 
© LA JOLLA WIRED SOND 
AM 
“30-20 10 ° Le) 20 “30 “40 -% -20 -10 oO 
OB ABOVE FREE SPACE FIELD 
(rcure 1. Maximum received signal versus atmospheric refraction. 
@ SAN DIEGO - RAYS 
© WIRED SONDE 
iF x AIRPLANE SOUNDING 
w = THEORY 
iw LN® 60 X10 
z Dr SSOFEET 
Ww) 
o 
< 
a 
a 
°o 
Ww 
Qa 
=) 
= 
= 
a 
<q 
-$0 -40 -30 -20 10 oO 260 -§0 -60 -30 -20 -10 
OB ABOVE FREE SPACE FIELD 
Ficure 2. Maximum received signal versus altitude of base of temperature inversion. 
o 60 MILE LINK SAN PEDRO TO SAN DIEGO TRANSMITTER AND RECEIVER AT 100 FT. ALTITUDE 
= BASE OF TEMPERATURE INVERSION S : © SAN DIEGO RaYSONDE °. e fac 
= 500 ee O aus o% 3 WIRED SONDE 6 AIRPLANE oye 
3 Se Oca me Px) °° °° . w® [2000 
= Cy ed e e@.e O e 
= e cee ere e@ 
= ar B e CO hd °, 
NE 
OB ABOVE FREE SPA 
5 
SEPTEMBER OCTOBER 
Ficure 3. Maximum signal and fading range related to height of base of temperature inversion. 
