Малошумящий усилитель низкой частоты К538УН3
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![RNTH-147 [1] Радиоприём на КВ. Преселектор или регенератор + УВЧ. Исследование, теория и практика](https://sun9-56.userapi.com/LQ9z_loX-ltu90DsIS-OisyB6KCanZfN7ywWrw/1iPgT-v3UE0.jpg)
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