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.
Mouser Electronics is announcing the availability of the new voltage regulators with low dropout...
We found this circuit in an old Mullard (Philips) documentation on the 555 and 556 integrated circuit...
This integrated amplifier was found in an English magazine that no longer exists, from 1975. The...