Found in old documentation, this circuit can use modern equivalent components. The signal has good strength thanks to the use of a power transistor. The Q1 transistor is a unijunction of the time.
Luminus SST 20 Deep Red LED Mouser Electronics is announcing in its stock the SST-20, a 60%...
This 4093 IC continuity tester was found in the November 1986 Radio Electronics magazine. The...
This receiver circuit was found in a Hands On Electronics from the 90s. The circuit uses a PLL...