Portable radio `` Alpinist RP-224 ''.
Portable radio receivers and radios on p / p.DomesticSince 1991, the Alpinist RP-224 portable radio receiver has been produced by the Voronezh PO Polyus. The portable radio receiver Alpinist RP-224 is designed to receive radio stations in the ranges DV - 2020.2 ... 1058.2 m, SV - 569.8 ... 186.7 m, KV - 31.58 ... 30.30 m and VHF - 4.56..4.05 m. Reception of stations in the LW and SV bands is carried out on magnetic, KB and VHF on telescopic antennas. The use of the wideband head ZGDSH-8-4 and the correction of the frequency response in the low-frequency range made the sound of the receiver soft and balanced. You can also listen to programs on headphones, the loudspeaker is turned off. The AM path is assembled on a field-effect transistor, 2 bipolar and transistor assemblies. The ChM path is assembled on 2 microcircuits of the K-174 series. In the FM path there is a non-disconnectable AFC and a disconnected BSHN. The receiver is powered by 4 elements A-343, from the network through the supplied power supply unit. The operating time of the receiver from batteries is 50 hours. Sensitivity in the ranges: DV - 1.5 mV / m, SV - 0.7 mV / m, KB - 0.3 μV, VHF-FM - 100 μV. Selectivity 30 dB. Maximum output power 0.7 W. The range of sound frequencies in the AM channels is 200 ... 3150, FM - 200 ... 7100 Hz. The dimensions of the radio receiver are 220x47x131 mm. Weight 0.6 kg.
