This 1 to 40 MHz amplifier is from a 1969 Motorola documentation. The components are of the time but admit modern equivalents.
This is the receiver for the previous transmitter, also using a transducer not very common in our...
Here we have a transceiver for the amateur radio range, which operates in the 40 m band (7 MHz),...
The integrated circuit used in this circuit is not very common, but an equivalent one can be...