Found in American documentation from the 1990s, this circuit generates signals in the 350 to 500 MHz range. The output power is in the order of 100 mW at 50 ohms.
We found this circuit in a 1987 documentation, but it can still be easily assembled. Its output must...
This circuit that emits siren sound can be used in a fire alarm. We found it in an old American...
Found elsewhere in this section, this circuit is from the April 1971 Radio Electronics magazine. Note...