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Miorița T4 S 641 T
Electronica · 1964
- Manufacturer
- Electronica
- Country
- Romania
- Year
- 1964
- Decade
- 1960s
- Category
- Radio
- Type
- Radio receivers
- Documentation score
- 2/5
- Last edited
- 03 OCT 2026
Specifications
- Transistors
- 2 × EFT107 (frequency changer and IF), EFT106 (IF), 2 × EFT151 (AF preamplifier), 2 × EFT121 (push-pull output)
- Wavebands
- LW 150–273 kHz, MW 525–1500 kHz
- Sensitivity
- 1 mV/m (ferrite antenna)
- Selectivity
- 18 dB
- IF rejection
- 18 dB
- Image rejection
- 20 dB
- Output power
- 0.25 W
- Loudspeakers
- circular, Ticonal or ceramic magnet, 1.5 VA
- Power supply
- 9 V (6 × R20 1.5 V cells)
- Dimensions
- 230 × 150 × 70 mm
- Weight
- 1.25 kg
Sources: [1]
Description
The Miorița T4 S 641 T is a portable transistor radio receiver made by Electronica in Bucharest [1]. It has a similar circuit and characteristics to the Sport S 605 T and the Turist S 615 T [1]. Unlike the Sport, which uses French S-type transistors, it uses Romanian E-type transistors with otherwise identical designations [1].
In the source table, sensitivity is given on medium waves for 50 mW output, selectivity for a signal ±9 kHz away, and output power at 10% distortion [1].
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Schematics
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