Left wing tip.

Top of the tail.

Bottom of the fuselage.

Top of the fuselage.

Poor reception of GPS signals due to very weak signals compared to the background noise at that frequency.

Terrain blocking the path between the transmitter and receiver/aircraft antenna.

Protection of a radar-reception antenna from the strong signals produced by a nearby transmission antenna.

Reduced reception by an antenna when part of the airframe blocks the signal to the antenna.

the area, where only the ground wave is receivable.

the area, where ground and sky waves are receivable.

the area, where only the sky wave is receivable.

the area, where neither the ground waves nor the sky waves are received.

32 m 

3.2 m

32 сm

3.2 сm