Buffer with MOSFET (CB26318E)

This boost amplifier was found in a Popular Electroniics from the 90s. The circuit operates up to 20 MHz depending on the coils used.

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Double tuning Pre-selector (CB9169E)
This circuit was found in a Popular Electronics from the 90's. The circuit has gained 10 to 20 dB...
Negative Ion Generator (CB26210E)
This simple circuit uses a car ignition coil. The circuit appeared in the 1983 Radio Electronics Annual...
3 to10 MHz Oscillator (CB13020E)
The modified Hartley oscillator seen in the figure can generate signals ranging from 3 MHz to 10...