30 MHz preamplifier (CB9151E)

Found in a 73 magazine for radio amateurs of the 1980s, this circuit uses a dual-gate MOSFET. This component is not currently common.

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Soft Start 15 V regulator (CB20800E)
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This commercial receiver from the year 1958 uses two AA cells as Power supply. The circuit is...
Low Noise Crystal Oscillator (CB6151E)
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