Grundig AS 4 B Bedienungsanleitung Seite 23

3.3.3
FM-IF Alignment at 10.7 MHz
Set range switch @ to range 1 (10.7/Wobb.),
Set rotary control © to 10.7 MHz,
Set modulation selector @ to "EXT. AM".
fo= 10,7 MHz f;=10,6 MHz fo= 10,8 MHz
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