http://circuit-diagram.hqew.net/Amplificator-rf-15W$2d30W-KT922$2c-KT920$2c-KT925$2c-KT934_12204.html
http://radioskot.ru/forum/4-755-3
http://www.electroschematics.com/338/fm-power-amplifier-bly87a-bly89a-kt920a-kt925b/