For the 400 to 500 MHz bands, this circuitry found in an 80's documentation uses a very critical mounting configuration.
Waking up to a loud and clear sound from an audio oscillator, after up to 5 hours of sleep, or...
Short duration pulses or "clicks" can be generated with the circuit seen in the figure. The...
This circuit is from a 1992 Electronics Handbook. The circuit generates a special tone effect for...