# Measurements

### Explanation of question 28

A method of measuring the output power of an SSB transmitter with an oscilloscope requires the use of

1. an RF oscillator
2. a two-tone RF oscillator
3. an AF oscillator
4. a two-tone AF oscillator

The answer is :- 4 A two-tone a.f. oscillator can be used. The signals from each of the oscillators are equal in magnitude but are not harmonically related.

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