This transmitter of relatively simple construction, has a power of 5 W. The arrangement of coils and other components must be well planned to avoid instabilities. The range can reach 10 km, depending on the antenna. The plate must be made of fiberglass and the capacitors are ceramic. The trimmers have maximum capacities of 100 pF. Power supply must be used with stability and excellent filtration. This unit must provide 13.6 V with 15 A. A car battery can be used. The transistors must be mounted on heat radiators and a 12 V x 5 W lamp must be used as the load. Legal restrictions regarding the use of this type of transmitter must be observed.