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Alfa 1 S 711 T
Electronica · 1972
- Manufacturer
- Electronica
- Country
- Romania
- Year
- 1972
- Decade
- 1970s
- Category
- Radio
- Type
- Radio receivers
- Documentation score
- 2/5
- Last edited
- 03 OCT 2026
Specifications
- Transistors
- 8 transistors + 2 diodes
- Wavebands
- MW 525–1605 kHz, SW 5.9–12 MHz
- Sensitivity
- 2 mV/m (ferrite antenna)
- Selectivity
- 16 dB
- IF rejection
- 15 dB
- Image rejection
- 15 dB
- Audio frequency response
- 300–2500 Hz
- Output power
- 0.15 W
- Loudspeakers
- 7 Ω, 0.5 VA
- Construction
- printed circuit; miniature parts
- Power supply
- 4.5 V (3 × R20 cells)
- Power consumption
- 18 mA without signal, 80 mA at nominal output
- Dimensions
- 160 × 100 × 40 mm (polystyrene case)
- Weight
- 0.5 kg (Alfa 2)
Sources: [1]
Description
The Alfa 1 S 711 T is a pocket transistor radio for medium and short waves, made by Electronica in Bucharest from 1972 [1]. The Alfa 2 has the same circuit and characteristics, with a differently decorated case [1]. A companion two-band pocket set, for long and medium waves, was the Pescăruș [1].
Tehnoton in Iași also made it in 1975 [2]. It was exported to Peru in 1975 [2].
In the source table, sensitivity is given on medium waves for 50 mW output and a 20 dB signal-to-noise ratio, selectivity for a signal ±9 kHz (AM) or ±300 kHz (FM) away, and output power at no more than 10% distortion [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.4 „Uzinele Electronica, 1966–1981”, p. 161 and annex II.4.2 „Radioreceptoare cu tranzistoare”, pp. 184–188
- [2]D. F. Lăzăroiu, N. Millea et al. – „Electronica românească. O istorie trăită”, vol. I, AGIR, section III.1 „Întreprinderea Tehnoton – Iași”, pp. 305–306, annex III.1.1 „Radioreceptoare produse de Tehnoton”, pp. 308–311