LOW LEVEL TRANSMIT AMPLIFIER
LOW LEVEL AMPLIFIER
The low level amplifier is very similar to the one used in the 80M Transceiver.
Many of the components were chosen because of their availability rather than their suitability. I used a
2SC1166 transistor for the first stage and a 2N4427 for the second stage. Any VHF/UHF transistor with
a maximum power rating of about one Watt should work work well in this circuit. I can recommend The 2N4427,
2N3866 and 2N5109. Both transistors need a clip on heatsink. The interstage transformer is 6 turns on
a medium to high permeability ferrite toroid. The 470 microHenry inductor can be replaced with a much
smaller one, 22 microHenries should be about right.
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