SignalPrep
Advanced Qualification · A-006 Receivers · A-006-004-009

La tension de la commande automatique de gain ("AGC") provient de l'un ou l'autre des deux étages suivants :

  1. AFI ou radiofréquence
  2. Bdétecteur ou audiofréquence
  3. CFI ou audiofréquence
  4. Dradiofréquence ou audiofréquence

Correct answer: C — FI ou audiofréquence. Question tirée de la banque officielle d'ISDE.

Why

Automatic Gain Control (AGC) keeps your receiver's volume steady by adjusting amplification based on signal strength, and it gets this strength information from either the intermediate frequency stage or the audio stage. 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

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