In this circuit, which uses only diodes, we have both simultaneous functions. The diodes are general-purpose types and the resistors have typical values of 2k2.
The output transistors can be the TIP41 and the BD135 and BD136 drivers. TR1 can be a BC558 and...
This circuit for signals up to 30 MHz can improve your reception in the medium and short-wave...
The values of the capacitance between output A and ground can be programmed digitally in 18 steps...