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.
With this circuit it is possible to have a safe indication of the balance point for the signals of the...
The transmitter presented by our contributing reader Adriano Muniz Moura has a power of 10 watts...
This circuit was found in the Linear Applications Handbook of the National Semiconductor of 1994....