Communications

Question 1

What is the function of the NAV Filter Switch?

Answer 1

Filters VOR, ADF, or ILS audio and controls DME audio.

Voice (V) – only voice transmissions can be heard. DME audio cannot be heard.

BOTH – voice transmissions and station identifiers can be heard.

Range (R) – only range audio (station identifiers) can be heard. DME audio can be heard.