• Country
• United States of America (USA)

• Manufacturer / Brand
• McMurdo Silver Co., Inc.(post WW2); Hartford

• Year
• 1947 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 46910

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

• Number of Tubes
• 4

• Valves / Tubes
• 6BA6 or 1T4 6AU6 or 1S5 6C4 or 1S5 6AK6 or 1S4

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast, more than 2 SW bands plus FM or UHF.

• Power type and voltage
• Line / Batteries (any type) / 6.3; 180; -7.5; 1.5; 45; 90 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: Receiver 801 - McMurdo Silver Co., Inc.post

• Notes
• McMurdo Silver Co. Receiver 801: Frequencies from 430 kHz to 63 MHz covered by 7 sets of plugin coils.
  Exists in two different variants. One for operation with an external AC power supply or batteries (6x series tubes), the other for batteries only (1x series tubes).

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 20 covering 1950

• Other Models

• Here you find 17 models, 9 with images and 9 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from McMurdo Silver Co., Inc.(post WW2); Hartford