We found this circuit in the June 1987 issue of Radio Electronics magazine. With it, it is possible to receive signals from the bands determined by the crystals in a common medium wave receiver.
This 3-channel transmitter for amateur analog TV from 902 to 908 MHz was found in a QST magazine...
The MC1455 integrated circuit consists of a version of the 555 made by Motorola. The circuit given...
The figure shows how to use the LM3900 to drain current from a load of up to 20 mA with the...