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Preamplifier
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A GaAsFET low-noise preamplifier for 137 MHz
Amplifier housing
Amplifier housing, BNC connector side
A complete view of the amplifier
Input tuned circuit
Input coil detail
Input coil detail
Output circuit and power supply
Output circuit
Output circuit
Mounting bracket
Mounting bracket
The amplifier mounted on the plastic mast
The mounted amplifier again
(c) John Coppens ON6JC/LW3HAZ
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