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characteristic impendence

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Barack

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I want do a matching for the power amplifier and antenna. how can I know the system characterristic impedence. I only have LCR meter.
 

jiripolivka

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LCR meter has no value in measuring impedance in your case.
To match an antenna to a power amplifier, you need a variable matching circuit which is a part of the amplifier. Such matching circuit usually matches a widely varying antenna impedance. A SWR indicator or a forward/backward current indicator is needed for the best match.

Refer to ARRL Amateur Radio Handbook os ARRL Antenna Book for details.
 

Barack

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thanks for your detailed information.
 

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