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Re: Erroneous embedded wattmeter reading


 

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If you have the original probes then your readings will be accurate. Otherwise you will need to to calibrate.

I have face this by mixing my various probes.

Raj

On 24/05/2024 5:25 PM, Carlo Piga via groups.io wrote:

Hi Farhan, I used CW to make measurements. I used an old CRT oscilloscope with 100MHz bandwidth. The waveform was well defined on the scope (3÷4 cycle inside the screen). The bandwidth of the attenuator was 10MHz and I make measurements at 7 MHz.
Thanks for the reply.


Il 24 Maggio 2024 13:27:27 CEST, Ashhar Farhan <farhanbox@...> ha scritto:
Carlo,
Which mode are?you using? It is best to measure this in CW. You must also check the scope's bandwidth setting and the time base.


On Fri, May 24, 2024, 7:08 AM Carlo Piga via <cpiga=[email protected]> wrote:
Thanks Evan.
I just update to the latest version. Nothing? changing...
I will try with a ham wattmeter (that I must buy and cost the same of the sbitx)...
Bye
Carlo IS0HLX


Il 24 Maggio 2024 12:25:28 CEST, Evan Hand <elhandjr@...> ha scritto:
Carlo,

The last thing to try would be to update the software.? I do not have any other suggestions, as this is a new first-time power-up.

Maybe Ashhar Farhan or one of the other experts in the group has other ideas.

73
Evan
AC9TU

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