This circuit appeared in Amateur Radio Today in an issue and was found in a 1995 issue. The circuit is for the AM band up to 3 MHz. The transistors are general-purpose.
Found in the September 1972 issue of Radio Electronics magazine, this signal injector is based on the...
This is a traditional configuration of a series regulator with zeners, found in a documentation from the...
This small pulse receiver had its construction described in a Radio Electronics magazine from...