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57
Régler l'AGC (contrôle automatique
du gain)
Dans la bande AM (MW et SW), si le niveau de volume
change trop rapidement pendant l'écoute, vous pouvez
retarder la réponse en réglant le gain AGC IF (fréquence
intermédiaire)
1. AGC N'est disponible que sur AM (MW/SW)
2. La fonction AGC est réglée sur le gain IF (fréquence
intermédiaire), elle dispose de 3 choix: 50db/auto/30db
2-1 La sélection « Auto » est le niveau AGC par défaut
avec un gain équilibré pour la réception, leglage
recommandé est Auto pour les applications nérales.
2-2 Choisissez 50 db pour avoir un gain IF supérieur
à « Auto », il permet de donner plus d'amplitude
aux signaux faible 10dB de plus qu'Auto, le bruit
de font sera augmenté, mais il sera facile de faire
saturer le signal avec un signal plus fort. En plus,
le muet doux ne doit pas être activé du fait de bruits
de fond plus forts.
2-3 Choisissez 30dB pour avoir un gain IF inrieur que
« Auto », si vous ne préférez recevoir que les
signaux plus forts, réduire le gain IF permet de
rejeter les signaux faibles et les bruits de fond.
26


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