70Mhz Rf Power Amplifier Circuit

Posted on Apr 6, 2012

The SD1143 transistor provides a gain of about 14 dB in this circuit. It uses the fact that a 175-MHz device has a much higher gain when used at lower frequencies. The amplifier was originally designed to be used with a transverter.

70Mhz Rf Power Amplifier Circuit
Click here to download the full size of the above Circuit.

The output is 8 to 10 W for a 300- to 500-mW input.

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