We found this circuit in the Electronics Experimenter Handbook magazine from 1993. L1 has 2 = 2 turns of 28 or 30 wire in the shape of 0.5 cm without core. The range reaches a few tens of meters.
We found this circuit in an American documentation from the 60's. The transistors are made of...
Unlike white noise, pink noise has a spectrum whose amplitude decreases with frequency. This...
This transmitter for the 7 MHz range, as we can assume by the number of turns of the coil, since the...