This 50 W amplifier was found in the November 1983 Radio Electronics issue. The circuit is suitable for the case and includes a preamp with tone control using off-the-shelf components.
This circuit can be used as a shield when its supply is 5 V. in this case we can exchange the...
This reflectometer or standing-wave ratio meter (SWR) was found in a 1980s American documentation. The...
This circuit is from Motorola's 1990 Linear Databook. The integrated circuit used is no longer...