Depending on the components, given in the table, this circuit can amplify signals of 100 MHz or 400 MHz. The circuit is from a 80's documentation. Equivalent transistor can be used.
This circuit produces a 2 kHz tone on a standard piezoelectric transducer. The circuit can be used as...
This circuit, from a 1998 documentation, allows to obtain more power for the radios and amplifiers of...
Using old germanium transistors like the CK722, this circuit has good gain. We found it in a...