The resistors R1 and R2 consist of 8 220 ohms x 2 W resistors connected in parallel. The dissipation must be higher for high transmitter power. The indicator can be the multimeter.
The circuit shown in the figure can generate signals up to 1.6 GHz. Coil L1 and capacitor C2 are...
This circuit was obtained from an English magazine from 1977. The magazine no longer exists, but...
With NAB equalization we found this circuit in an English documentation from 1967. The transistors used...