Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-002-011

Harmonics produced in an early stage of a transmitter may be reduced in a later stage by:

1. A greater input to the final stage
2. B transistors instead of tubes
3. C tuned circuit coupling between stages
4. D larger value coupling capacitors

Correct answer: C — tuned circuit coupling between stages. From the official ISED question bank, verified word for word.

Why

Tuned circuit coupling between stages uses resonant circuits that act like filters, allowing only the desired frequency to pass while blocking unwanted harmonics generated earlier. The full explanation — and one for every question — is in Pro.

Practise this section

Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.

Drill A-005 — free, no account · All A-005 questions