Toot-a-Loop-Radio R-72 (R72, R-72S)
- Manufacturer / Brand
- Panasonic, Matsushita, National ナショナル (also tubes); Osaka
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Transistors
- OC1044 2SA101 or. OC1045 2SA101 or. OC1045 2SB475 or. AC125 2SB475 or. AC128 2SB475 or. AC128 OA1160
- Main principle
- Superheterodyne (common); ZF/IF 455 kHz
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Dry Batteries / R72: 1 x 9 or R72S: 2 x 1.5 Volt
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.5 cm = 2.2 inch
- Plastics (no bakelite or catalin)
- from Radiomuseum.org
- Model: Toot-a-Loop-Radio R-72 - Panasonic, Matsushita,
- Design Radio or Novelty / Gadget - fancy or unusual shape.
- Dimensions (WHD)
- 152 x 70 x 152 mm / 6 x 2.8 x 6 inch
The Panasonic R-72 (R72) was probably exclusively built by Matsushita Electric Industrial Co., Ltd., Japan for different brands and makers in other countries/markets. The only differences between such versions are stickers for customizing the unit. See for instance the Citizen Radio R-720 for Citizen Electronics C0., Ltd. Japan.
The R-72 was at least available in red, orange, yellow, blue and white. The material for R-72 is ABS plastic (acrylonitrile butadiene styrene copolymer). Frequency Range is 525 - 1605 kHz = 571 - 187 m.
The novelty radio "Toot-a-Loop" R72 was designed to be wrapped around the wrist. It is shaped like a donut with the hole off center. If twisted the two halfs of the radio pivot and form an "S"-shape. One side of the radio has a grille for the speaker. There is also a jack for a mono earplug. The R72 has to be twisted into the "S" position in order to be tuned, but the volume control is on the outer side of the radio and can be adjusted regardless of whether the radio is twisted, open or closed.
Transistor listing applies for model R72S only!
Powering: 1 x 9V (6F22) for model R72, 2 x 1.5V (AA) for model R72S
We are not yet sure about the production years. It still has been made in 1972 - we have 1969 for the starting year (design). Who has adverts or other reliable information about the production dates of this model?
- Net weight (2.2 lb = 1 kg)
- 0.2 kg / 0 lb 7 oz (0.441 lb)
- External source of data
- Stefan Wörner
- Source of data
- -- Schematic
- Mentioned in
- Antique Radio Magazine - Italy, Club Antique Radio Magazine (n.144, luglio-agosto 2018, pag. 40-45)
- Model page created by Ernst Erb. See "Data change" for further contributors.
- Other Models
Here you find 2749 models, 2520 with images and 542 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Panasonic, Matsushita, National ナショナル (also tubes); Osaka
The model Toot-a-Loop-Radio is part of the collections of the following members.