Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-009-004
Pour quel type d'émission la technique de sauts de fréquence est-elle employée?
- AAMTOR
- BPaquet
- CRTTY
- DÀ étalement du spectre
Correct answer: D — À étalement du spectre. Question tirée de la banque officielle d'ISDE.
Why
Frequency hopping is a method where a signal rapidly switches between many different frequencies, and this technique is the defining feature of spread spectrum transmission. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
Drill A-005 — free, no account