Stationary transistor radio "Estonia-010-stereo".
Radiols and receivers p / p stationary.DomesticThe stationary transistor radio "Estonia-010-stereo" has been produced by the Tallinn plant "Punane-RET" since 1983. High-class block stereophonic radio "Estonia-010-stereo" is intended for reception of broadcasts of radio broadcasting stations in the MW and VHF bands, as well as for high-quality reproduction of mechanical recording from gramophone records. The radiola consists of five units: a tuner, a LF preamplifier, an EPU unit and two active speakers of the "25AS-311" type, later "35AS-213". The tuner has LED indicators for fine tuning, stereo transmission, mono-stereo operation, multipath and signal strength. There is a voltage calibrator, which provides a more accurate setting of the recording level on the tape recorder, electronic frequency adjustment, digital scale and silent adjustment system. There is an automatic shutdown of the AFC when you touch the tuning knob and a mode (far stereo) that reduces high-frequency noise when receiving stereo broadcasts from distant radio stations. The preamplifier has smooth and separate tone control for HF and LF, limiting the AF range from below, fixing the frequency response, indication of the output signal level and overload. In addition to the inputs and outputs intended for docking with the rest of the units, the preamplifier has inputs and outputs for two tape recorders, with the possibility of rewriting phonograms, a universal input, an output for connecting stereo phones. The electric player is equipped with a microlift, a hitchhiker and a stroboscope of the disc rotation speed. There is a software control of the tonearm. The electric drive uses a low-speed direct drive electric motor. The active AC "25AS-311" consists of a PA with passive crossover filters at the output, three heads: 25GD-26, 15GD-11, ZGD-31 and a power source. There is an electronic protection against short circuits in the load. The main technical characteristics of the blocks: Tuner. Real sensitivity with an external antenna in the range of CB 150 µV, VHF 10 µV. The nominal range of reproducible frequencies of the path: AM 150 ... 3550 Hz, FM 5 ... 15000 Hz. Crosstalk attenuation between channels 36 dB. Harmonic coefficient in the AM path 5%, FM 0.8%. Dimensions 460x80x360 mm. Weight 10 kg. Pre-amplifier. The nominal frequency range is 20 ... 20,000 Hz. Tone control range (at frequencies of 40 and 16000 Hz) ± 12 dB. The crosstalk between channels at a frequency of 1 kHz is 48 dB. Harmonic distortion 0.03%. Signal-to-weighted noise ratio 71 dB. Dimensions 460x80x360 mm. Weight 10 kg. Electric player. The nominal frequency range is 20 ... 20,000 Hz. Knock coefficient 0.08%. The relative rumble level is -74 dB. Dimensions - 480x108x384 mm. Weight - 12 kg. Loudspeaker "25AS-311". Rated power 25 W. Input voltage 1 V. Sound pressure frequency range 40 ... 18000 Hz. The nominal average sound pressure is 1.2 Pa. Dimensions - 320x540x320 mm. Weight 20 kg.
