• Country
• United States of America (USA)

• Manufacturer / Brand
• Raytheon Mfg. Co.; Cambridge, MA

• Year
• 1956 ?

• Category
• Television Receiver (TV) or Monitor

• Radiomuseum.org ID
• 275330

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

• Number of Tubes
• 17

• Valves / Tubes
• 6AF4A 6BQ7A 6AT8 6CB6 6CB6 6CB6 6AN8 6AN8 6BN6 25BK5 6C4 6S4A 12AU7 25BQ6 or 25CU6 25AX4GT 1B3GT 21AVP4A

• Main principle
• Superhet with RF-stage

• Wave bands
• VHF incl. FM and/or UHF (see notes for details)

• Power type and voltage
• Alternating Current supply (AC) / 60 cycles, 110-120 Volt

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

• Material
• Metal case

• from Radiomuseum.org
• Model: UM-2188 Ch= 21T32 - Raytheon Mfg. Co.; Cambridge,

• Shape
• Tablemodel, with any shape - general.

• Notes

• The RAYTHEON model UM-2188 is a 21" b/w TV with US standard VHF Tuner channels 2 thru 13, 14 thru 83 UHF.Equipped with UHF-VHF-tuner 211-25394, chassis 21T32 and picture tube 21AVP4A. 2x selenium rectifier.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 331 Folder 12 dated 9-56)

• Author
• Model page created by Dirk Taekels. See "Data change" for further contributors.

• Other Models

• Here you find 324 models, 152 with images and 240 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Raytheon Mfg. Co.; Cambridge, MA