| 摘要 |
FIELD: radio engineering; signal reception in noise environment. ^ SUBSTANCE: newly introduced in radio receiving device that has program-control unit, series-connected adjustable preselector, first frequency mixer, first switched-filter unit, and second frequency mixer, second switched-filter unit, third frequency mixer, single-pole telephony unit, and automatic telephony unit are variable electronic capacitor made in the form of switched set of capacitors inserted in each circuit through switch, software package, instruction demodulator, first switching unit, automatic communication unit, and second switching unit. ^ EFFECT: enhanced noise immunity. ^ 1 cl, 1 dwg |
