4.
Which of the following causes mutual interference?
A.
Enemy jamming of frequencies used by friendly forces
B.
Force multipliers operating harmonic frequencies
C.
The emissions of two communications systems interfering with each
other
D.
Radios operating on restricted frequencies
5.
Which form of interference results from a nuclear detonation?
A.
Mutual interference
B.
Collective radiation
C.
Frequency variation
D.
6.
Where is it difficult to normally establish a good electrical ground?
A.
Arctic regions
B.
Jungle areas
C.
Mountains
D.
Swamps
3-11
SS0135
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