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So measuring harmonics uses the multiband feature and span sets the measuring span around the fixed harmonics calculated from the center frequency.

But after setting measure 'off' multiband is still enabled. Is this a possible bug?

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Also: if you have a personal set of multiband measurements don't forget to save this to sd, because measuring harmonics will replace your settings.

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BTW: Something I noticed on my sa: there is a signal on 60 MHz around -100 dBm with all harmonics present that seems to be internal. Only visible if you set a small RBW to lower the noise floor.?

Some internal xtal?

On Wed, Jan 8, 2025 at 03:12 AM, pa3cqn wrote:

BTW: Something I noticed on my sa: there is a signal on 60 MHz around -100 dBm with all harmonics present that seems to be internal. Only visible if you set a small RBW to lower the noise floor.?

Correct. There are very low level internally generated spurs at 60 MHz and it's harmonics.

This is according the spec.

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On Wed, Jan 8, 2025 at 09:42 PM, Erik Kaashoek wrote:

Correct. There are very low level internally generated spurs at 60 MHz and it's harmonics.

This is according the spec.

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