This circuit for the 40 MHz band was published in Radio Electronics magazine in December 1957. Its purpose was to monitor the signals of the Russian satellite launched at the time.
This 1992 circuit was designed to operate with the CB16766E circuit auto alarm. The circuit...
Nixie-type displays are no longer used except for assemblies of people who like old technology. The...
We found this circuit in a 2006 documentation. The circuit has two parts: a base where we have the...