• Country
• United States of America (USA)

• Manufacturer / Brand
• DeWald Radio Mfg. Corp., Pierce Airo Inc.

• Year
• 1937 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 37425

• • Brand: Pierce Airo

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

• Number of Tubes
• 2

• Valves / Tubes
• 6C6 12A7

• Main principle
• 2 AF stage(s)

• Wave bands
• - without

• Power type and voltage
• AC/DC-set / 105-125 Volt

• Loudspeaker
• Magnetic loudspeaker (reed) generic.

• from Radiomuseum.org
• Model: 202A Electrocall Remote Station - DeWald Radio Mfg. Corp.,

• Notes
• Part of Electrocall 200 intercom System.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 8 = 1937 and before

• Other Models

• Here you find 442 models, 195 with images and 344 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from DeWald Radio Mfg. Corp., Pierce Airo Inc.