Basic Qualification · B-002 Operating and procedures · B-002-003-009
Quelle bande latérale utilise-t-on habituellement pour la phonie sur 20 mètres?
- ASupérieure
- BInférieure
- CIndépendante
- DDouble
Correct answer: A — Supérieure. Question tirée de la banque officielle d'ISDE.
Why
On the 20-metre band, amateur radio operators almost always use the Upper sideband for voice communication. The full explanation — and one for every question — is in Pro.
Practise this section
Operating and procedures is section B-002 of the Basic exam: How to operate: calling, phonetics, Q-signals, repeaters, nets, emergency traffic, and the courtesies that keep a band usable.
Drill B-002 — free, no account