Portable radios Selga-410 and Selga-309.
Portable radio receivers and radios on p / p.DomesticSince 1983 and 1985 portable radio receivers "Selga-410" and "Selga-309" have been produced by the Riga PO "Radiotekhnika" and the Kandavsky radio plant. The Selga-309 radio receiver was created on the basis of the Selga-410 radio receiver, which was developed and released by an experimental series back in 1983. Both radios are the same. The Selga-309 radio receiver is a dual-band DV and SV superheterodyne, assembled on a K174XA10 multifunctional microcircuit, a KP-303 field-effect transistor and several radio components. The plant also produced a small batch of radios on "loose" basis. The main characteristics of the RP: Ranges: DV - 148 ... 285 kHz, SV - 525 ... 1607 kHz. Sensitivity in the ranges: DV 2.5 mV / m, CB 1.3 mV / m. Selectivity 30 dB. The range of reproducible frequencies is 450 ... 4000 Hz. Maximum output power 150 mW. The dimensions of the receiver are 74x158x37 mm, its weight with batteries is 340 g. The receiver is powered by three elements - A-316, with a total voltage of 4.5 V.
