All Transistor 5 TR 6503

• Country
• United States of America (USA)

• Manufacturer / Brand
• Channel Master Corp.; USA

• Year
• 1959 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 106582

• Picture
• Schematics

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

• Number of Transistors
• 5

• Semiconductors
• 2T73 2T76 2T65 2T65 2T65

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.25 inch = 5.7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: All Transistor 5 TR 6503 - Channel Master Corp.; USA

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 2.63 x 4.25 x 1.25 inch / 67 x 108 x 32 mm

• Notes

• Channel Master 6503 with leather case and strap. It was manufactured in Japan circa 1959 by Sanyo. Channel Master was the name that Sanyo hid behind when exporting radios to the USA in the late 1950's and early 1960's. According to Sanyo they were the top exporter of transistor radios in 1959 and the majority of these exports would have been branded as Channel Master. Sanyo had two different model numbers for this radio, 6503 and 6504. The 6504 was the 'poor mans' version; it came with no accessories. Many websites report that this radio can also be found branded RCA GP-336 but the face is quite different. Interestingly this Channel Master uses five Toshiba transistors inside. Sanyo must have worked out some sort of deal with Toshiba to supply them with transistors. Sams photofact set 495 folder 6 date 8-60 features the Channel Master models 6503 and 6504 as the same schematic.

  Made in Japan

• Net weight (2.2 lb = 1 kg)
• 0.310 kg / 0 lb 10.9 oz (0.683 lb)

• Price in first year of sale
• 20.00 $

• Mentioned in
• -- Original prospect or advert

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 495 folder 6 date 8-60)

• Literature/Schematics (2)
• Collector's Guide To TrR1 Bunis trans.94 (Model info on page 60)

• Literature/Schematics (3)
• Transistor Radios (Model info on page 32)

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

• Other Models

• Here you find 163 models, 148 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Channel Master Corp.; USA