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I do not have a very accurate Wattmeter for 27MHz, I only have an Albrecht SWR-30.
So I am measuring the amplitude of the voltage Vpp on the 50ohm dummy load with the oscilloscope, 10x probe, then I calculate
Power= [(Vpp/2)*0.7071]^2/50

With 52.5V p-p on the dummy, corresponding to 6.9W calculated, the SWR-30 reads this:

[ATTACH=full]63668[/ATTACH]

[QUOTE="Summertown, post: 815777, member: 65077"] I do not have a very accurate Wattmeter for 27MHz, I only have an [URL='https://www.amazon.de/dp/B005CN7XX2/']Albrecht SWR-30[/URL]. So I am measuring the amplitude of the voltage Vpp on the 50ohm dummy load with the oscilloscope, 10x probe, then I calculate Power= [(Vpp/2)*0.7071]^2/50 With 52.5V p-p on the dummy, corresponding to 6.9W calculated, the SWR-30 reads this: [ATTACH type="full" alt="Power meter.jpg"]63668[/ATTACH] [/QUOTE]

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