Radionics Schematics – Advanced 3 Dial
Here is an advanced radionics schematic. Comprised of three tuning dials and 1 pico Farad tuning capacitors tied to the + and – pins of the tuning potentiometers. The output stage is also linked to a low impedance mono preamplifier which output is fed through the output crystal coil and onto an antenna which provides a path from the box into the atmosphere.
If you are more ambitious you could experiment with multiple amplifier stages and frequency transmitters to propel your radionics signals several hundred feet depending on the transmitter power.