General view

Universum ST 902

Electronica · 1970

Year
1970
Decade
1970s
Category
Television
Type
Television sets
Documentation score
2/5
Last edited
03 OCT 2026

Specifications

TV standard / channels
CCIR B and G, VHF bands I, III and UHF bands IV, V
Tubes and semiconductors
12 tubes, 5 transistors, 8 diodes
Screen size
61 cm
Picture tube
A 61-120 W, self-protecting, aluminised, electrostatic focusing, 110°
Antenna input
240 Ω balanced (VHF and UHF)
Sensitivity
100 µV
Selectivity
18 / 30 / 40 / 30–40 / 30–44 dB
Horizontal resolution
400 lines (centre), 350 lines (corners)
Audio frequency response
80–11,000 Hz (acoustic 100–10,000 Hz)
Audio output power
1.8 W
Loudspeakers
permanent-dynamic, 3 VA, 750 Ω
Construction
Telefunken channel selector with mechanical switching and variable-capacitor tuning; horizontal tilting chassis with three positions; 3 printed-circuit boards
Design / kits
export model (CCIR)
Power supply
220 V, 50 Hz
Power consumption
180 VA
Dimensions
720 × 490 × 267 mm

Sources: [1]

Description

The Universum ST 902 is a black-and-white television set for export to the Western CCIR standard, made by Electronica in Bucharest, with a 61 cm, 110° picture tube [1]. It is an improved form of the Mondial, with a lower noise level, a better vertical sync board and higher reliability [1].

Electronica began exporting stationary television sets of the Miraj family in 1969, to West Germany with the Mondial type, followed in 1970 by the Universum ST 901 and ST 902; in 1971 it began exporting kits to Albania for the Adriatic, and continued exports to West Germany with the Select 2000, Interfunk, Star-Lux and others [1]. In 1970 television production moved to the new plant at Pipera, and its first batch was for export to West Germany [1]. Electronica’s TV exports began with 650 sets in 1969 and reached 140,546 in 1980 [1].

Other models of the same group: Mondial E 61-691, Universum ST 901, Audiphon 961 A, Royal 1074 E 61-710 E 3.

In May 1970 Electronica signed a contract with the West German mail-order firm Quelle for 50,000 Universum ST 901 and ST 902 sets, to be delivered in 1971–1973 (15 million DM); 48,000 were delivered [2]. Built on the Miraj chassis, they had a transistorised VHF-UHF channel selector from the Italian firm Ducati and a Preomat keyboard with seven freely programmable memory keys [2]. Quelle checked every delivery by sampling (AQL), and lots were rejected because of poor workmanship, soldering and components; Electronica sent technicians to Nuremberg to repair and repack the sets [2].

In the source table, video sensitivity is given for 6 V rms on the picture-tube cathode, the signal-to-noise ratio on the sound path, and the selectivity values are, in order, the rejection of the own sound carrier and of signals below and above the picture carrier (and, where given, of the IF and the image frequency); the audio response is at −3 dB [1].

Schematics

No schematics available yet.

Documents

No documents available yet.

References

  1. [1]D. F. Lăzăroiu, N. Millea et al. – „Electronica românească. O istorie trăită”, vol. I, AGIR, section II.4 „Uzinele Electronica, 1966–1981”, pp. 166, 180–181 and annex II.4.5 „Receptoare de televiziune 1966–1981”, pp. 192–199
  2. [2]D. F. Lăzăroiu, N. Millea et al. – „Electronica românească. O istorie trăită”, vol. I, AGIR, section VI.4 „Amintirile unui inginer şef”, pp. 467, 471–472