Radio receiver `` R-721 '' (Trap-SV).
Receiving and transmitting radio equipment.The radio "R-721" (Trap-SV) has been in serial production since 1969. The receiver is designed for round-the-clock aural reception of telephone and telegraph signals in the range of 50 ... 2000 kHz divided into six sub-bands, as well as reception of special types of transmissions in the presence of intermediate and terminal devices. Sensitivity in telegraph mode 0.8 µV, telephone 8 µV. The bandwidth is narrow, infinitely adjustable in the range of 15 ... 3000 Hz and wide fixed in the range of 5000 and 8000 Hz. Receiver dimensions 475х320х425mm. Its weight is 38 kg.
