• Country
• United States of America (USA)

• Manufacturer / Brand
• Howard Radio Company; Chicago, IL

• Year
• 1940

• Category
• RF (Radio Frequency-) Amplifier

• Radiomuseum.org ID
• 44612

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

• Number of Tubes
• 3

• Valves / Tubes
• 6AB7 or 1853 6AB7 or 1853 80

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: 650 PreAmp - Howard Radio Company; Chicago,

• Shape
• Tablemodel, low profile (big size).

• Notes
• The Howard Type 650 Pre-Amplifier is designed to be used with ANY RECEIVER and covers a frequency range of .55 MHz to 43 MHz.

• Price in first year of sale
• 29.95 USD

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 12 = ca. 1941 and before

• Other Models

• Here you find 354 models, 157 with images and 214 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Howard Radio Company; Chicago, IL