Chapter 1 - Section 1: Basic principles Flashcards
1
Q
What are the frequency bands for VHF?
A
118 MHz to 137 MHz
2
Q
What is the required channel spacing below FL195?
A
25 kHz
3
Q
What is the required channel spacing above FL195?
A
8.33 kHz
4
Q
What is the theoretical range of VHF at 10,000 ft?
A
123 nm
5
Q
What is the theoretical range of VHF at 39,000 ft?
A
200 nm
6
Q
What are the speech frequencies?
A
300 Hz to 3 kHz
7
Q
How are speech AM used in radio telephony usually polarised?
A
Vertically
