• Country
• United States of America (USA)

• Manufacturer / Brand
• Trav-Ler Karenola Radio & Television Corp.(Travler); Chicago

• Year
• 1958

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 169819

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

• Number of Transistors
• 5

• Semiconductors
• 2N168A 2N292 2N169 2N406 2N270

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 1 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.5 inch = 6.4 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 6 All Transistor Power-Mite TR-280 - Trav-Ler Karenola Radio &

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

• Notes

• The Trav-Ler Radio Model TR-280 is a Battery operated vertical shirtpocket transistor.

  Similar to the models reported under Sonora TR-281-B.

• Mentioned in
• Collector's Guide To TrR1 Bunis trans.94 (1996, page 285)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 12-58, Set 425, Folder 15)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 620 models, 282 with images and 520 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Trav-Ler Karenola Radio & Television Corp.(Travler); Chicago