• Country
• United States of America (USA)

• Manufacturer / Brand
• Challenger Amplifier Co. (Bogen); New York, NY / Paramus, NJ

• Year
• 1955 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 273073

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

• Number of Tubes
• 6

• Valves / Tubes
• 6SF5 6SF5 6SL7 6V6 6V6 7Z4

• Number of Transistors

• Semiconductors
• Vibrator Vibrator

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• 117 / 6 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 18 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: CH618 - Challenger Amplifier Co. Bogen

• Shape
• Chassis only or for «building in»

• Notes

• 6V vibrator power supply, second vibrator for phonograph motor.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (487 Servicer)

• Author
• Model page created by Thomas Bavis. See "Data change" for further contributors.

• Other Models

• Here you find 47 models, 43 with images and 35 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Challenger Amplifier Co. (Bogen); New York, NY / Paramus, NJ