FIELD: radio engineering, communication.
SUBSTANCE: inserting the M-band radio of the M-channel dial frequency-selective device (FSD), M-channel tunable FSD into the input device, and inserting the series-connected first controlled attenuator and the first RF amplifier between the output of the M-channel dial FSD and the input of the M-channel tunable FSD, along with performing both FSD using the LC-band filters.
EFFECT: increasing the selectivity of the radio receiving channel.
2 dwg
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