This RF circuit measures transmission power from 0.25 W to 10 W. The maximum frequency depends on the diode and the gauge is an analog instrument. A multimeter can be used instead.
This circuit divides the voltage of a 12 V battery by 2 and can supply currents up to 1 A at the...
This CW transmitter for the 3,5 MHz band, low power, was published in a march 1961 Radio...
This circuit from Delta Products was published in the May 1974 Radio Electronics magazine. The...