• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1944–1946 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 107705

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

• Number of Tubes
• 8

• Valves / Tubes
• 1LN5 1LC6 1LN5 1LN5 1LH4 25L6GT 3Q5GT 25Z6GT

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz; 3 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Line / Batteries (any type) / 12- / 90- / 110~ Volt

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Receiver R-100/URR - MILITARY U.S. different makers

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

• Dimensions (WHD)
• 427 x 287 x 230 mm / 16.8 x 11.3 x 9.1 inch

• Notes

• Radio Receiver R-100/URR called the "Morale Builder", designed for entertaining and maintaining morale of troops. Reception of voice-modulated signals in the broadcast band 0.54-1.5 MHz and two HF bands 3.6-8.5 MHz and 8.5-19 MHz. Manufactured in the US by Zenith, Majestic and Espey. Many sets were made in Europe in 1945 and later.

• Net weight (2.2 lb = 1 kg)
• 8.5 kg / 18 lb 11.6 oz (18.722 lb)

• Source of data
• -- Collector info (Sammler)

• Mentioned in
• -- Original prospect or advert (TM 11-487A Directory of Signal Corps Equipments. Department of the Army, August 1950.)

• Author
• Model page created by Valery Gromov. See "Data change" for further contributors.

• Other Models

• Here you find 398 models, 350 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)