Build a UHF TV Preamplifier Circuit Diagram. An inexpensive. antenna-mounted, UHF TV preamplifier can add more than 25 dB of gain. The first stage of the preamp is biased for optimum noise, the second stage for optimum gain. Ll, L2 strip line `` J../8 part of PC board.
UHF TV Preamplifier Circuit Diagram
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