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15dB UHF TV Antenna Booster
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This is an UHF band TV antenna preamplifier circuit With 15dB gain to build easily. It is formed based
on BF180 UHF Transistor. The first stage is an band pass filter constructed by the C1, CV1, L1, L4, C7 and
C3, the second stage is a base-common voltage amplifier with low input impedance to match.
Build the L1 ~ L4 as air core coil to obtain high Q-Factor. You can find out about air core coil
construction and calculation here.
After assembling, pack it into a proper metallic box and connect the ground of the circuit to the box
to reduce noise effect.
Ask your question about this circuit in the forum.
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