This crystal configuration can be made with triggers of any logic. The frequency is given by the formula next to the diagram. This setting is specifically for TTL.
This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz....
This circuit is from an old English documentation. It is intended for coupling a microphone to the...
This circuit was found in a Radio Electronics magazine from October 1987. It can be used as a...