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Re: [Amps] Watts to DBM??

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Subject: Re: [Amps] Watts to DBM??
From: "Steve Flood" <>
Reply-to: Steve Flood <>
Date: Mon, 5 Oct 2009 04:59:41 -0600
List-post: <">>
So, I am using an oscilloscope with an RF sampler to measure output power.

With barefoot 100 watts, I read 0.6 volts p-p on the scope.
With the amp in line, I read 2.0 volts p-p on the scope.
What is my output power?

20 log (2.0/0.6) = 10.46 dB

I divide 10.46 dB by 10 and get 1.46 dB.
I take 10 to the 1.46 power and get 11.11.
I multiply by 100 and get 1111 watts output.

Is that correct?

Steve, KK7UV
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