• Country
• United States of America (USA)

• Manufacturer / Brand
• Arvin, brand of Noblitt-Sparks Industries

• Year
• 1948

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 32955

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

• Number of Tubes
• 5

• Valves / Tubes
• 1U4 1R5 1U4 1S5 3V4

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / AC/DC 110-120 /90 & 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Power out
• 0.25 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: 250-P Ch= RE-248 - Arvin, brand of Noblitt-Sparks

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• Selenium Rectifier

• External source of data
• Ernst Erb

• Source of data
• Collector's Guide to Antique Radios 4. Edition

• Circuit diagram reference
• Rider's Perpetual, Volume 18 = 1949 and before

• Mentioned in
• Guide to Old Radios

• Literature/Schematics (1)
• Beitman Radio Diagrams, Vol. 09, 1949

• Literature/Schematics (2)
• Table Top Radios Vol. 4 Stein 2003 (page 51.)

• Literature/Schematics (4)
• Photofact Folder, Howard W. SAMS (Set 43, Date 8/48, Folder 4813-4)

• Other Models

• Here you find 698 models, 487 with images and 567 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Arvin, brand of Noblitt-Sparks Industries