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Tiny ULTRA. Scan made with in bundle antenna. is it a normal spectrum?

 

Hi guys,
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Calibrated and did all the things necessary to run it correctly with ultra path enabled.
?
Scanned my office with the in bundle antenna and there are for sure both 2.4Ghz and 5Ghz wifi.
The 5Ghz is not present at all and the nearest frequency near the 2.4Ghz is 2.16.
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Is it a normal behavior?
?
?
Thanks
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Yes, what you detected is quite normal these days.? You're fortunate that's all you detect!? Even here in the county between two hogbacks in N. Colorado where we see no cities or development, I've got a whole bunch more.

Dave - W?LEV


On Wed, Jan 22, 2025 at 4:19?PM nighthawk.eng via <nighthawk.eng=[email protected]> wrote:
Hi guys,
?
Calibrated and did all the things necessary to run it correctly with ultra path enabled.
?
Scanned my office with the in bundle antenna and there are for sure both 2.4Ghz and 5Ghz wifi.
The 5Ghz is not present at all and the nearest frequency near the 2.4Ghz is 2.16.
?
Is it a normal behavior?
?
?
Thanks
?



--
Dave - W?LEV
 

Good to know!
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My only concern is why I'm not getting something around 2.4Ghz from my wifi router...
NH
?
 

WiFi is often hopping frequency and you need to disable spur reduction to better see it.
But with disabled spur reduction you will also see all kind of mirrors and spurs when doing such a wide scan.
Another option is to do a narrower scan around 5.5 GHz? (span 200 MHz) and enable MAX HOLD
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Did you read the page in the WiKi about the Ultra mode? I assume as you are using the Ultra mode, so you know when the Ultra mode will fail
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--
Designer of the tinySA
For more info go to

 

Copy that and thank you so much.
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My test are to be sure the system is working correctly since I'm thinking about using it with a TEM Cell for EMC precompliance.
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Unfortunately I'm getting a strange resonance no matter what at around 700Mhz and testing more than one product.
I would like to be sure that the problem is not related to acquisition system.
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Thank you so much
?
NH
?
 

On 22/01/2025 16:19, nighthawk.eng via groups.io wrote:
Hi guys,
Calibrated and did all the things necessary to run it correctly with ultra path
enabled.
Scanned my office with the in bundle antenna and there are for sure both 2.4Ghz
and 5Ghz wifi.
The 5Ghz is not present at all and the nearest frequency near the 2.4Ghz is 2.16.
Is it a normal behavior?
Thanks
Did you add a second trace with the "calc" option "max hold"?

Cheers,
David
--
SatSignal Software - Quality software for you
Web:
Email: davidtaylor@...
BlueSky: @gm8arv.bsky.social, Twitter: @gm8arv
 

Perhaps you could terminate the input with 50 ohm and see what it scans.?
It should be a near flat line.
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And don't forget hdmi causes a lot of signals, as does other computer equipment.
?
regards,
?
Henk

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