Sony - 7F-74DL Radio

Sony 7F-74DL
1969/1970
in working order


main principle
Superheterodyne general; IF 455/10700 kHz
Wave ranges
Long wave, medium wave, short wave, and FM.
Operating mode / Voltage
Dry batteries / 3 × 1.5 volts
Speakers
Dynamic LS, no excitation coil (permanently dynamic) / Ø 10 cm = 3.9 inches
Durability / Performance
0.73 W (unknown quality)
Material
Plastic housing (not Bakelite), thermoplastic
from Radiomuseum.org
Model: 7F-74DL - Sony Corporation; Tokyo
Form
Travel device > 20 cm (can operate independently of a power grid)
Dimensions (WHD)
195 x 210 x 65 mm / 7.7 x 8.3 x 2.6 inch
remark
Sony 7F-74DL FM/AM solid state 11 transistor.
FM: 86.5 [87.5] - 108 MHz
LW: 150 - 285 kHz
MW: 530 - 1,605 kHz
SW: 5.9 - 12 MHz
AFC, dial light, tone switch.
Also usable as a car radio, then output power 4 W.
Network operation with an additional power supply is possible.

See also models 7F-74W (FM/AM) and 7F-74L (FM/LW/MW/SW).

The correspondences are obtained from two different diagrams and from a list of materials presented above, as well as from a diagram of mine identical to the one with the red writing. The circuits are all identical; only the transistors change.

Net weight
1.7 kg / 3 lb 11.9 oz (3.744 lb)