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70Mhz Rf Power Amplifier Circuit

2015-01-05 06:03  
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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

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

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