Portable device (power supply with control board) produced by the company Officine Radio Marconi in Genoa for the Marconi therapy. Therapeutic procedure used mainly for joint diseases or in the aftermath of sprains, dislocations or fractures and in neuralgia and sciatica. This therapy is based on subjecting the parts of human organism to the action of ultra-short electromagnetic waves at very high frequency, placing the patient in contact with the electrodes.