• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Engineering Labs. (REL); Long Island City (NY)

• Year
• 1949 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 52468

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

• Number of Tubes
• 12

• Valves / Tubes
• 7F8 7F8 7AG7 7AG7 7AG7 7AG7 7AG7 7A6 7F7 7C5 7C5 5U4G

• Main principle
• Superhet with RF-stage; ZF/IF 10700 kHz; 2 AF stage(s)

• Tuned circuits
• 13 FM circuit(s)

• Wave bands
• FM Broadcast Band Only

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 10 W (max.)

• Material
• Metal case

• from Radiomuseum.org
• Model: REL 646B - Radio Engineering Labs. REL;

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

• Notes

• Separate instruments for field strength and center tuning.
  Push-pull audio amplifier.
  Audio output impedance: 500 Ω or 8 Ω

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

• Author
• Model page created by Peter Rutishauser. See "Data change" for further contributors.

• Other Models

• Here you find 23 models, 11 with images and 8 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Engineering Labs. (REL); Long Island City (NY)