Advanced Qualification · A-006 Receivers · A-006-001-007
Quel étage d'un récepteur comprend un circuit d'entrée et un circuit de sortie accordés sur la fréquence reçue?
- ALe détecteur
- BL'amplificateur RF
- CL'oscillateur local
- DL'amplificateur audio
Correct answer: B — L'amplificateur RF. Question tirée de la banque officielle d'ISDE.
Why
The RF amplifier is the correct choice because it is the first active stage in a receiver designed to boost weak incoming signals, and its circuits are specifically tuned to the exact frequency you are trying to hear. The full explanation — and one for every question — is in Pro.
Practise this section
Receivers is section A-006 of the Advanced exam: Receivers: superheterodyne design, selectivity, sensitivity, images, AGC and noise.
Drill A-006 — free, no account