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Car-radio variometer
Electronica
- Manufacturer
- Electronica
- Country
- Romania
- Year
- Unknown
- Category
- Components
- Type
- Modules and subassemblies
- Documentation score
- 1/5
- Last edited
- 03 OCT 2026
Specifications
- Type
- variometer (ferrite cores moving inside the tuning coils)
- Application
- AM tuning in car radios
- Active devices
- coils Li = Lrf = 1075 µH, Lo = 1430 µH (±10%, closed, at 0.51 MHz)
- Dimensions
- 26 × 40 × 80 mm
- Weight
- 0.09 kg
Sources: [1]
Description
The car-radio variometer is the tuning unit made by Electronica in Bucharest for its transistor car radios: ferrite cores move along the axis inside the input, RF and oscillator coils [1]. It was fitted to the Sinaia S 693 T and its export version, the Fleet [1]; the Sinaia was the first set to use a Romanian-made variometer, which in car radios replaces the variable capacitor [2].
Its shaft turns with at most 450 gf at +25 °C and 500 gf at −25 °C; the stop withstands at least 3.5 kgf·cm; travel 4.75–14 ± 0.2 mm [1].
Gallery
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Schematics
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Documents
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References
- [1]D. F. Lăzăroiu, N. Millea et al. – „Electronica românească. O istorie trăită”, vol. I, AGIR, section II.6 „Componente, subansamble și ansamble conexe”, II.6.3 „Alte componente și subansamble pentru produsele electronice”, p. 268
- [2]D. F. Lăzăroiu, N. Millea et al. – „Electronica românească. O istorie trăită”, vol. I, AGIR, section II.4 „Uzinele Electronica, 1966–1981”, p. 160