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Communicationsmedium#1291

8.33 kHz channel spacing is mandatory in which airspace?

A

European airspace above FL195 (and increasingly below)

Correct

B

Worldwide above FL195

C

US airspace only

D

Only oceanic airspace

Explanation

8.33 kHz spacing is mandatory in European airspace above FL195 and is being progressively implemented at lower levels in congested areas.

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