Federal Aviation Administration, DOT
Pt. 36, App. A
q is the temperature in SectionF; and
H is the relative humidity, expressed as a
percentage.
A36.7.2(b) For calculations using the International System of Units (SI):
where
h(d) is listed in Table A36-4 and f0 in Table
A36-5;
a(i) is the attenuation coefficient in dB/1000
ft;
+ ( ) 10
)
0 /1000 + 1.1394 10
[log ( f ) + 8.42994 10
0
1010 ( log H - 1.328924 + 3.179768 10 - 2 )
10
f0
10
( - 2.173716 10 - 4 2 +1.7496 10 - 6 3 )
where
h(d) is listed in Table A36-4 and f0 in Table
A36-5;
nshattuck on DSK9F9SC42PROD with CFR
- 1.916984
- 3
]
- 2.755624
]
a(i) is the attenuation coefficient in dB/100
m;
q is the temperature in SectionC; and
H is the relative humidity, expressed as a
percentage.
and
=
- 3
A36.7.3 The values listed in table A36-4 are
to be used when calculating the equations
listed in section A36.7.2. A term of quadratic
interpolation is to be used where necessary.
Section A36.8 [Reserved]
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(i) = 10