This circuit is from a 2004 documentation serving for signals from 1 MHz to 160 MHz. The antenna is of the telescopic type and the analog instrument is of the type found in old sound equipment.
We found this circuit in an American documentation from 1964, but it can be easily assembled...
Indicated to be used as a clock, this circuit was found in old documentation. The operational of...
This circuit was obtained in a 1990 English magazine. The circuit can be assembled with equivalent power...