Army tube HF-VHF radio receiver `` R-323M '' (Tsifra-M).
Receiving and transmitting radio equipment.The army tube HF-VHF radio receiver "R-323M" (Tsifra-M) has been produced since 1978. "R-323M" is designed to receive telegraph signals and signals with amplitude and frequency modulation. The radio is assembled according to the superheterodyne circuit, with two frequency conversions. Has four sub-bands. Frequency indication is carried out by means of LED indicators. The bandwidth is switchable and has three positions. The receiver has no gain control. At the input there is a step attenuator with attenuation of 0, 20 and 40 dB. In appearance, this radio receiver is similar to the R-326M receiver, the difference is in the range of received frequencies. Main technical characteristics: Range of received frequencies 20 ... 100 MHz. Frequency shaping / setting - smooth local oscillator (LC generator). Sensitivity in AM mode (narrow / wide band) - 3/5 μV, FM - 2.5 μV, CW 1 μV. Attenuation along the mirror channel is not less than 800 times. Rated supply voltage - 12 V. Overall dimensions - 255x270x370 mm.
