Chapter 2 - Section 2: Block diagram operation

Question 1

How is power supplied to the antenna coupler?

Answer 1

Single phase 115v AC, 400 Hz through the transceiver

Question 2

What does the HF coupler enable?

Answer 2

The matching of the aircraft HF antenna with the output circuit (50 ohms) of the HF transceiver

Question 3

What is the physical description of the HF coupler?

Answer 3

Pressurised sealed box

Question 4

What are the six stages that the antenna coupler is tuned?

Answer 4

1. Start
2. Reception/standby
3. Tune A
4. Tune B
5. Tune C
6. Operational position