• Country
• United States of America (USA)

• Manufacturer / Brand
• Hammarlund Mfg. Co. Inc.; New York, NY

• Year
• 1932

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 44034

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

• Number of Tubes
• 8

• Valves / Tubes
• 57 58 58 57 58 58 47 80

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Comet Pro [Var. 1 ] - Hammarlund Mfg. Co. Inc.; New

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

• Notes

• The Hammarlund Comet Pro (Early model, Variation 1 according to Communications Receivers by Moore) covers 1.5 to 21 MHz in four bands in AM and CW (BFO).

  In contrast to the prototype, bandsspread dials are viewed through small windows, and there is no power output stage. Optional unit with output stage (valve 245), speaker and power supply was available.

• Price in first year of sale
• 160.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Circuit diagram reference
• Rider's Perpetual, Volume 4 = ca. 1934 and before

• Mentioned in
• Communications Receivers (4th edition page 59)

• Literature/Schematics (1)
• Short Wave Craft February 1933 pages 604-5 and 634

• Other Models

• Here you find 144 models, 92 with images and 58 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hammarlund Mfg. Co. Inc.; New York, NY