The circuit uses a fast Norton amplifier in a configuration that excites a 75 ohms line. The circuit is suggested by National's 1994 Linear Applications Handbook.
In this radio the coil can be made with 70 + 30 turns of wire 28 to 32 in a cardboard or PVC tube...
The integrated circuit used in this filter is like to a double 741 and must be powered by a...
This 4-stage amplifier was found in a Mullard transistor manual from 1960. The circuit has a...