Question 1
What error in VDF can occur due to signal bending around obstacles?
Question 2
What does VDF stand for?
Question 3
What array of antennas is used in VDF systems to determine direction?
Question 4
Which drawback of VHF communications is related to geographical features?
Question 5
Which accuracy class in VDF provides the most precise direction finding?
Question 6
How does the VHF band primarily propagate through space?
Question 7
What is the maximum wavelength generally associated with HF bands used in aviation?
Question 8
What bearing measurement direction does VDF provide to air traffic control?
Question 9
What is the typical frequency range for VHF communications in aviation?
Question 10
What is one reason for the infrequent use of VDF by air traffic controllers?
Question 11
What is the QDR code in VDF?
Question 12
What is a significant challenge faced by HF communication regarding antennas?
Question 13
What feature of the HF communication band makes it suitable for long-range communication?
Question 14
What is the ideal length of a VHF antenna for aviation?
Question 15
In the context of VDF, what does QDM represent?