Radio stations Harvest U-1 and Harvest U-2.
Receiving and transmitting radio equipment.The radio stations "Urozhay U-1" and "Urozhay U-2" have been produced since 1947 and 1954 by the Omsk Radio Plant named after V.I. Kozitsky and Egorshinsky radio plant. The radio station "Urozhay U-1" is intended for radio communication in agriculture. It operates in the 2000 ... 3000 KHz range and was produced in several frequency series. Each radio station has two fixed frequencies stabilized by quartz, so tuning was not required during operation. The radio station allows simplex and duplex communication. Simplex operation is performed at one frequency. Duplex communication is carried out as with a regular telephone. In this case, the transmitters of radio stations operate at different frequencies, differing by 456 kHz. To work, you need 2 antennas: for reception and transmission. Connection of the radio station to the telephone network is possible. The radio station provides reliable communication at a distance of up to 30 km. The radiation power is 0.75 W. Powered by a 12 V storage battery. Anode voltage is obtained from a vibration transducer. Since 1954, a modernized radio station `` Urozhay U-2 '' was produced on finger-type radio tubes, which could also be powered from dry batteries.
