• Country
• United States of America (USA)

• Manufacturer / Brand
• McMartin Industries Ltd; Omaha, Nebraska

• Year
• 1960 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 282697

• Number of Tubes
• 0

• Valves / Tubes
• unknown_Tube

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 120 Volt

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

• Power out
• 20 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: PA Amplifier CM-20 - McMartin Industries Ltd; Omaha

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 9 x 5 x 5.5 inch / 229 x 127 x 140 mm

• Notes

• PA amplifier; inputs: Mic + Phono.

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 8 models, 7 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from McMartin Industries Ltd; Omaha, Nebraska