Only for reference this is a circuito f a commercial receiver of the year 1958. The circuit uses coils and transformers hadr to find in our days. The circuit is destinated to receive MW stations.
This circuit uses a common digital clock to activate a relay at a programmed time. The circuit takes...
This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the...
This transmitter has excellent range when using an external antenna (respecting legal...