47:(MUF). In the prediction of usable frequencies, the FOT is commonly taken as 15% below the monthly median value of the MUF for the specified time and path.
50:
The FOT is usually the most effective frequency for ionospheric reflection of radio waves between two specified points on Earth.
104:
24:
79:
44:
84:
32:
8:
43:
for 90% of the days of the month. The FOT is normally just below the value of the
98:
89:
36:
58:
28:
40:
39:
that is predicted to be usable for a specified path and
96:
35:, is the highest effective (i.e. working)
97:
13:
14:
116:
17:Frequency of optimum transmission
53:Synonyms for this term include:
66:optimum transmission frequency
1:
80:Lowest usable high frequency
7:
105:Radio frequency propagation
73:
10:
121:
69:optimum working frequency
63:optimum traffic frequency
45:maximum usable frequency
85:Federal Standard 1037C
33:ionospheric reflection
57:frequency of optimum
112:
120:
119:
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114:
113:
111:
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109:
95:
94:
76:
12:
11:
5:
118:
108:
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93:
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87:
82:
75:
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64:
61:
9:
6:
4:
3:
2:
117:
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68:
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62:
60:
56:
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48:
46:
42:
38:
34:
30:
26:
22:
18:
52:
49:
25:transmission
20:
16:
15:
90:MIL-STD-188
31:waves via
23:), in the
37:frequency
99:Category
74:See also
59:traffic
29:radio
41:time
27:of
21:FOT
101::
19:(
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