1643 ATR-904
Sharp; Osaka
- Country
- Japan
- Manufacturer / Brand
- Sharp; Osaka
- Year
- 1964–1966
- Category
- Car Radio, perhaps also + sound player/recorder
- Radiomuseum.org ID
- 316220
-
- alternative name: Hayakawa Electric Co.Ltd.
- Number of Transistors
- 9
- Semiconductors
- Main principle
- Superhet with RF-stage; ZF/IF 455 kHz
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage Battery for all (e.g. for car radios and amateur radios) / 12 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
- Material
- Metal case
- from Radiomuseum.org
- Model: 1643 ATR-904 - Sharp; Osaka
- Shape
- Chassis only or for «building in»
- Dimensions (WHD)
- 6.25 x 2 x 7.875 inch / 159 x 51 x 200 mm
- Notes
-
Sharp Model ATR904
Tuning is simplified by a power operated selector bar. DX local transfer switch giving long range reception for country areas. Negative feedback circuit eliminates tone distortion. All-metal shockproof cabinet.
Specifications: nine transistor one band superheterodyne system and RF amplifier. Tuning range, 530 - 1605 kC/s (kHz). Intermediate frequency, 455 kC/s (kHz). Output 2½ watts maximum, 1.7 watts undistorted. Power source 12 volt car battery. Speaker 6" x 4" oval PDS type.
Speaker box dimensions: 2⅝" x 7⅝" x 5⅛"Transistor types not mentioned in the schematic.
This model sold in Australia between 1964 & 1966 for £66/3/-.
- Mentioned in
- Mingay's Price Service (Feb 1965 to Feb 1966)
- Literature/Schematics (1)
- J.R. Publications Transistor Radio Service Handbook (Group C4, 1967, Page S181. (Also at KevinChant com))
- Author
- Model page created by Martin Kent. See "Data change" for further contributors.
- Other Models
-
Here you find 1333 models, 1203 with images and 517 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Sharp; Osaka