This commercial receiver from the year 1958 uses two AA cells as Power supply. The circuit is intend to receive MW station and the transistors are germanium types not easy to find today.
This circuit was found in a Ferranti documentation from 1969. The transistors are common types of...
This amplifier is from the 80s integrated circuit manual itself. Equivalent configurations can be adopted for...
We found this circuit in an English magazine from 1980. The circuit can be easily assembled even...