Portable transistor radio receiver "Geolog-2".
Portable radio receivers and radios on p / p.DomesticThe portable transistor radio receiver "Geolog-2" has been producing the Dnepropetrovsk radio plant since 1972. The model is made on the basis of a serial radio receiver "Geolog", differing from it by the use of three microcircuits of the "K237" series. They work in a frequency converter, local oscillator, IF amplifier, detector and LF preamplifier. To ensure high selectivity in the adjacent channel, the piezoceramic filter used in the Geolog model has been replaced by a four-loop FSS. To raise the frequency response in the region of low sound frequencies, a T-shaped low-pass filter is included at the ULF input. As in the Geolog receiver, a 1GD-39 loudspeaker is installed here. Rated output power 0.5 W. The receiver is powered by 6 elements 373. The dimensions of the model are 290x190x90 mm, its weight is 3 kg.
