FIELD: radio instruments. SUBSTANCE: device is designed as panoramic superheterodyne receiver with four-fold frequency conversion. Input circuit of device has three switched band-pass filters which switching runs simultaneously with switching of squarer which is inserted in reference voltage circuits of one mixer. Reference input of said mixer receives signal from voltage-controlled oscillator which frequency is squared. This results in possibility of alternation of mixer signal in range of 527-827 MHz. Unit for frequency recalculation is connected to decade unit of digital indication board in order to achieve correct indication in extended range. EFFECT: increased frequency range. 2 dwg
