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Category: Inside Circuits Views: 2692 Rank: 10 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.  Do not exceed that or you will start get bad distorted picture! Feed with 25 Volts/3Amps. Use Really big heatsink. Datasheet file1: Click here to download BFQ136.pdf datasheet.
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How to install a UHF masthead amplifier
Comments
4Watt UHF TV linear amplifier wrote on Feb 15, 2008
I cladding with the existing network but there [is] its substitution transistor is thank is not previous
Gane wrote on Jul 30, 2009
With printed coil it shall hardly work...Output "coil" on that freq is not simple coil...
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