427 Big Frog Eyes

• Country
• United States of America (USA)

• Manufacturer / Brand
• Setchell Carlson, Inc.; St.Paul (MN)

• Year
• 1947

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 57791

• • Brand: Doraphone

• Picture
• Schematics

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

• Number of Tubes
• 6

• Valves / Tubes
• 12SK7 12SA7 12SK7 12SQ7 50L6 35Z5

• Main principle
• Superhet with RF-stage; ZF/IF 392 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 115 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 427 Big Frog Eyes - Setchell Carlson, Inc.; St.

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 12.25 x 8 x 7.25 inch / 311 x 203 x 184 mm

• Notes

• Built in loop antenna plus external possible.

  Available in brown, ivory, blue with ivory or red with ivory.

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Circuit diagram reference
• Rider's Perpetual, Volume 16 = ca. 1948 and before

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition (Rider's Perpetual, Volume 18)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 21, Folder 4711-29)

• Literature/Schematics (2)
• Table Top Radios Vol. 1 Stein 98 (page 141.)

• Other Models

• Here you find 127 models, 70 with images and 99 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Setchell Carlson, Inc.; St.Paul (MN)