Festival S 521 A4
Electronica · 1952
- Manufacturer
- Electronica
- Country
- Romania
- Year
- 1952
- Decade
- 1950s
- Category
- Radio
- Type
- Radio receivers
- Documentation score
- 2/5
- Last edited
- 03 OCT 2026
Specifications
- Tubes
- 6A7, 6B8S, 6P6S, 6Ţ5S
- Wavebands
- MW, SW
- Sensitivity
- 300 µV
- Selectivity
- 15 dB
- Audio frequency response
- 150–3000 Hz
- Output power
- 0.5 W
- Design / kits
- Soviet kits
- Power supply
- 110 / 150 / 185 / 220 V AC, 50 Hz
- Power consumption
- 25 VA
Sources: [1]
Description
The Festival S 521 A4 is a mains-powered tube radio receiver made in Bucharest by Radio Popular, the factory that became Electronica in 1960 [1]. It was assembled from kits imported from the Soviet Union [1].
Festival is one of the names of the popular-class table radios made at Radio Popular [1]. The table gives it together with the Pionier S 521 A3, which has the same tubes but covers long and medium waves; the sensitivity is given jointly for both models [1].
In the source table, sensitivity is given for 50 mW output, selectivity at 1 MHz for ±10 kHz detuning, the audio frequency response at −6 dB relative to 400 Hz, and output power at 10% distortion [1].
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