Audio Booster (CB6181E)

This reinforcing stages from a 1960s documentation. No information is given about the transformer and the transistor admits equivalents.

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Sub Carrier Generator (CB4241E)
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30 MHz preamplifier (CB9151E)
Found in a 73 magazine for radio amateurs of the 1980s, this circuit uses a dual-gate MOSFET. This...
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We found this Vox in a 1969 Motorola documentation. Transistors support modern equivalents and the SCR can...