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Old November 24th 09, 03:40 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jun 2006
Posts: 828
Default How can one make a dummyload from a LC circuit ?

Ronald wrote:

Suppose we feed 20 watts in a p.a. but don't want to use a dummyload
in the p.a. Come on this is done all the time.



Done all the time, but usually with resistive loads.

Could you elucidate exactly why you want to do this? I can't think of
any good reason to use LC. I suspect you might have some terms and
principles a little mixed up.

A dummy load is used to absorb RF power at the end of the transmit
circuitry. The transmitter does everything it's supposed to do, but the
power goes into the dummy load, and is dissipated as heat. Ideally no RF
makes it out of the load.

The ideal impedance for a transmitter is resistive. For that nothing can
beat a resistor.

- 73 de Mike N3LI -
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