• Country
• United States of America (USA)

• Manufacturer / Brand
• Ferguson (in the United States - see text)

• Year
• 1941 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 40549

• • alternative name: Ferguson Co., J.B. || Ferguson Radio Corp. || Ferguson Radio &Television Co., Inc.

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• 6Q7 6J5 6K6 6K6

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Power out
• 7.5 W (unknown quality)

• from Radiomuseum.org
• Model: 7540 Amplifier - Ferguson in the United States

• Notes
• The model 7540 amplifier is used with the model 6340 radio; push-pull af output stage.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 13 = 1942 and before

• Other Models

• Here you find 66 models, 16 with images and 39 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ferguson (in the United States - see text)