# C.W. transmitters and keying

### Explanation of question 6

Fig. 17.3 represents the output circuit of a power amplifier for a VHF. transmitter. The circuit

- i will act as a high-pass filter
- ii will act as a low-pass filter
- iii can be used for matching

1. i and iii are true
2. ii and iii are true
3. i is true but iii is false
4. ii is true but iii is false

The answer is :- 2 The circuit is that of a low-pass filter. Re-arrangement of the circuit shows how it can be used for matching.

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