Reflex receiver (CB8491E)

This circuit was found in a 1968 Hughes documentation. The transistors are from that time. The coil is for the medium or short-wave range.

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Delayed SCR trigger (CB19336E)
The circuit shown is from an old European publication. In it we have the way to activate a relay...
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We found this circuit in a European publication from the 1990s. Transistors are still common types...
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