Antenna tuner (CB7459E)

Found in a QST from the 90's this circuit is suitable for the medium and short-wave range.

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Monostable (CB22281E)
This monostable or one-shot circuit was found in an American publication from the 60's....
Test Microamplifier (CB18180E)
This output step with a transistor can be used in experimental radios and intercoms or as a signal...
CMOS Monostables (CB24878E)
In the figure we have 3 monostable circuits for triggering without rebounds of CMOS circuits. The...