- Country
- United States of America (USA)
- Manufacturer / Brand
- Philmore Mfg. Co. - Ajax Products Co.; New York, NY
- Year
- 1957–1959 ?
- Category
- Kit (Parts plus instruction) or building instructions only
- Radiomuseum.org ID
- 272582
- Number of Transistors
- 2
- Semiconductors
- Main principle
- TRF with diode detector; 2 AF stage(s); Reflex
- Tuned circuits
- 1 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Dry Batteries / 9 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
- Material
- Plastics (no bakelite or catalin)
- from Radiomuseum.org
- Model: TR-22 - Philmore Mfg. Co. - Ajax
- Shape
- Very small Portable or Pocket-Set (Handheld) < 8 inch.
- Dimensions (WHD)
- 7.5 x 5 x 2.5 inch / 191 x 127 x 64 mm
- Notes
-
This two transistor portable radio kit features a large 6.25 inch ferrite core antenna coil and a 4 inch speaker. The kit gave many youngsters their first experience with the newly available transistors. Transistors were the miracle devices of the 1950s.
This set is similar to Philmore TR-22A and the Philmore TR-201.
The two transistors are labeled Philmore PH3 and PH2. The PH2 may be replace by GT81, 2N138, 2N109, or 2N44. The PH3 may be replaced by 2N136, 2N112, CK760, or GT761.
- Net weight (2.2 lb = 1 kg)
- 1 lb 6 oz (1.375 lb) / 0.624 kg
- Price in first year of sale
- 12.94 US $
- Mentioned in
- Transistor Radios (by David and Robert Lane, page 83)
- Author
- Model page created by David Barker. See "Data change" for further contributors.
- Other Models
-
Here you find 81 models, 71 with images and 14 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Philmore Mfg. Co. - Ajax Products Co.; New York, NY