In most cases works in ether the radio amateurs of countries the CIS renounce the use of home-made приемно-передающей apparatus and pass to the modern imported transceivers. As is generally known, a standard for such transceivers is providing of launch power at the level of 5-100 watts. In case of necessity to increase launch power to the level indicated it is necessary to apply in a license (from 200 watts to 1500 W for different countries) the additional imported strengtheners are powers the cost of that on occasion even exceeds the cost of transceiver. A way out of this situation is a construction of power-amplifiers making of "home made" (i.e. in domestic terms), the parameters of that small yield to their foreign analogues. Sometimes it is dictated by costliness of the sought after devices, but mostly a desire to collect something the own prevails here by hands.