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Istria S 661 A
Electronica · 1966
- Manufacturer
- Electronica
- Country
- Romania
- Year
- 1966
- Decade
- 1960s
- Category
- Radio
- Type
- Radio receivers
- Documentation score
- 2/5
- Last edited
- 03 OCT 2026
Specifications
- Tubes
- 4 tubes; diodes 2 × EFD115 and BY127
- Wavebands
- LW 150–290 kHz, MW 525–1605 kHz, SW 6–18 MHz, FM 65–73 MHz
- Sensitivity
- AM 150–180 µV, FM 30 µV
- Selectivity
- AM 26 dB, FM 30 dB
- IF rejection
- AM 30 dB, FM 45 dB
- Image rejection
- 30 dB (AM, FM)
- Audio frequency response
- AM 100–3000 Hz, FM 100–7000 Hz
- Output power
- 1 W
- Loudspeakers
- 4 Ω, 3 VA
- Construction
- conventional wiring; printed-circuit FM block
- Power supply
- 110 / 120 / 220 V AC, 50 Hz
- Power consumption
- 50 VA
Sources: [1]
Description
The Istria S 661 A is a mains-powered AM-FM tube radio receiver made by Electronica in Bucharest in the second half of the 1960s [1]. It is built with conventional wiring, except for the FM block, which is on a printed circuit [1]. Electronica made tube radios until 1969, when they were completely replaced by transistor sets [1].
In the source table, sensitivity is given on medium waves for 0.5 W output, selectivity for a signal ±9 kHz (AM) or ±300 kHz (FM) away, the audio response within 6 dB, and output power at no more than 10% distortion [1].
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