![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjI2FKyS_-IBSFUDrmrBy1DZVeVMFsSD4Ru5nFSFU911PyH5Sw0sqM-0SRTr0G8bBbUlu-wZAIf4O5f1o7Q_8osGrJ9JGttLKNZWMa5OYLXPaksEw8kFBkeG94-DBcqKbHtuzagic57X6Fs/s320/uhf-tv-linear-amplifier-4w-by-bf136-197x250.gif)
That Circuit is a UHF TV linear amplifier for small TV transmitters with output aroun 100-200mW. The transistor BGQ136 comes with SOT-122 case has gain of 13dB at 800MHz. So with input 100mW you get 2W output and for 200mW you get 4W.
Read Source: http://www.next.gr/inside-circuits/4Watt-UHF-TV-linear-amplifier-l4360.html