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This paper describes a new medium frequency (0.3 to 3 mc) PNP transistor compared with previously described units of this type. The new unit (neutralized to eliminate feedback) will give power gains as high as 39 db at 455 kc, 12 db at 10 mc and has an oscillation limit of 40 mc. A noise factor at 1 mc of as low as 3 db is achieved.
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Pánkové et al. (1954) studied this question.
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