Orbita 1965
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Portable transistor radio "Orbit" since 1965 produced the Riga radio plant named after A. Popov. The class IV radio receiver "Orbit" is designed for operation in the medium and short (25 ... 75 m) wave bands, and one internal magnetic antenna is used for reception on both bands. For high electroacoustic and operational qualities and modern exterior design, the Orbit receiver has been awarded a quality mark. The receiver is assembled on a superheterodyne circuit on 8 transistors and 2 semiconductor diodes. You can listen to the transmissions on the internal 0.1GD-6 loudspeaker or on the external miniature phone TM-4. The radio is powered from four A-316 type elements connected in series. The sensitivity of the receiver in the CB and KB bands when receiving an internal magnetic antenna is 1 mV / m, the adjacent channel selectivity is 20 dB, the attenuation of the mirror channel in the KB band is 10 dB, and CB is 20 dB. IF 465 kHz. The receiver's automatic gain control system ensures that when the input voltage changes by 26 dB, the output voltage changes by 8 dB, the volume is adjusted within 30 dB. The frequency response of the sound pressure with non-uniformity of 14 dB is 450 ... 3000 Hz, the average sound pressure is 0.2 N / m, the nominal output power is 100 mW, the rest current is 9 mA. The performance of the receiver is maintained when the supply voltage changes within 6.5 ... 3.8 V. The dimensions of the radio receiver are 150x80x35 mm, its weight is 340 g (without batteries).
Documentation:
Information from collection of Valery Khartchenko