T3C01 : Why are simplex UHF signals rarely heard beyond their radio horizon?
A
They are too weak to go very far
B
FCC regulations prohibit them from going more than 50 miles
C
UHF signals are usually not propagated by the ionosphere
D
UHF signals are absorbed by the ionospheric D region
Correct Answer: UHF signals are usually not propagated by the ionosphere