Rodica S 615 AB
Electronica · 1960
- Manufacturer
- Electronica
- Country
- Romania
- Year
- 1960
- Decade
- 1960s
- Category
- Radio
- Type
- Radio receivers
- Documentation score
- 2/5
- Last edited
- 03 OCT 2026
Specifications
- Tubes
- 1R5T, 1T4T, 1S5T, 1S4T
- Wavebands
- LW 150–290 kHz, MW 525–1605 kHz, SW 6–14 MHz
- Sensitivity
- 200 µV (MW)
- Selectivity
- 22 dB
- IF rejection
- > 38 dB
- Image rejection
- > 30 dB
- Audio frequency response
- 100–3000 Hz
- Output power
- 0.1 W
- Loudspeakers
- 1 × 4 Ω, 2.5 VA
- Quality class
- III
- Power supply
- 110 / 120 / 220 V AC, or batteries: 90 V (anode) and 1.5 V cell (filaments)
- Power consumption
- about 15 VA on AC; on batteries: anode 14 mA, filaments 125 mA
Sources: [1]
Description
The Rodica S 615 AB is a simple and robust tube radio receiver made by Electronica in Bucharest from 1960 for rural areas, where electricity was scarce or still being introduced; it runs either from the mains or from batteries [1]. The text calls it the Rodica S 615 B [1].
It uses miniature tubes with 1.25 V filaments; a BUB-type 90 V anode battery, or twenty 4.5 V flat batteries made at ELBA Timișoara, gave about 80–100 hours of use [1]. Output power fell as the batteries ran down, from 0.25 W with a new battery towards 50 mW, but the set kept working down to 50 V anode voltage, with excellent sensitivity on all three wavebands [1]; the annex gives 100 mW as nominal output [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 frequency response at 1 MHz within 6 dB, and output power at no more than 10% distortion; the quality classes are only indicative, based on IEC recommendations and the Soviet GOST 5651/1951, as Romania had no such standard at the time [1].
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