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Re: Tiny ULTRA. Scan made with in bundle antenna. is it a normal spectrum?
Good to know! My only concern is why I'm not getting something around 2.4Ghz from my wifi router... NH
By nighthawk.eng@... · #19169 ·
Re: Tiny ULTRA. Scan made with in bundle antenna. is it a normal spectrum?
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
By W0LEV · #19168 ·
Tiny ULTRA. Scan made with in bundle antenna. is it a normal spectrum?
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
By nighthawk.eng@... · #19167 ·
Re: Measurement problems, strange step noise floor behavior between 600-800kHz
In my rush to try to duplicate the test, I too neglected to set my scope to x1. I should have noticed the 20dB discrepancy. <red face>
By Terry Perdue · #19166 ·
Re: ZS-407 Spurious Signals
Thank you, Erik. Just to provide additional context, this is using FW 1.4.193, after two calibrations. The signals are there with LNA on or off and Ultra mode enabled or disabled. The signal levels -
By Otto Schellin · #19165 ·
Re: #bug_report CSV save with dBuV #bug_report
Jeff? So would you take a request for (e.g.) a 0dBuV level signal to be referring to the generator EMF setting or the terminated PD ? Tip? Correct answer is its differently defined in Japan to USA
By Bruce Akhurst · #19164 ·
Re: Grounding a TEM Cell
Maybe try building an EMI tent from such a fabric: https://pl.aliexpress.com/item/1005007593501107.html Chris
By Krzysztof · #19162 ·
Re: Grounding a TEM Cell
A TEM cell acts like a terminated shielded cable with the device under test between the shield of the cable.? An enclosed TEM Cell or GTEM can be used in a noisy environment as long as it has proper
By hwalker · #19161 ·
Re: #bug_report CSV save with dBuV #bug_report
Yes, dBuV i and dBuV/m is a standard for EMC like EN55032 used for multimedia devices. At 50 Ohms, there is an offset of 107, which suggests it may be relatively straightforward to
By nighthawk.eng@... · #19160 ·
Re: #bug_report CSV save with dBuV #bug_report
dBuV is fine and well defined, it is dBu (ie without the V) that is confusing and inconsistent. Jeff
By G8HUL · #19159 ·
Re: ZS-407 Spurious Signals
Otto, Let me see what can be done to get rid of these -- Designer of the tinySA For more info go to https://tinysa.org/wiki
By Erik Kaashoek · #19158 ·
Re: ZS-407 Spurious Signals
On 22/01/2025 03:24, Otto Schellin via groups.io wrote: > I just received my ZS-407 from R&L Electronics. I do frequency coordination for > large events and the most common frequency range for
By David J Taylor · #19157 ·
ZS-407 Spurious Signals
I just received my ZS-407 from R&L Electronics. I do frequency coordination for large events and the most common frequency range for wireless devices is in the 470 MHz to 608 MHz UHF TV band. I set
By Otto Schellin · #19156 ·
Re: Measurement problems, strange step noise floor behavior between 600-800kHz
No need to feel embarrassed. ?The tinySA takes some time to get familiar with. ?We are all in this group to share and learn from each other. ?Have fun with your new device. Roger
By Roger Need · #19155 ·
Re: Brand new to both TinySA AND Spectrum Analyzers
" You should only engage the LNA when your other efforts to pull a signal out of the noise have failed..." You don't know what signals are there *unless* you try the LNA. You can always turn it off
By Matthew Rapaport · #19154 ·
Re: Measurement problems, strange step noise floor behavior between 600-800kHz
Thank you so much! You are absolutely correct! Of course, the scope was still set to the 10x probe endorsing to increase sensitivity on the TinySA. I am totally embarrassed now and feel sorry to have
By lschafer@... · #19153 ·
Re: Grounding a TEM Cell
With things like that the only way to know is to try.? Some electronics instruments (my RF RMS voltmeter for one) and musical instrument amplifiers have a switch which allows floating or grounded
By Donald S Brant Jr · #19152 ·
Re: Brand new to both TinySA AND Spectrum Analyzers
When figuring power levels, assume that something will go wrong and it will transmit at full power.? To do otherwise is to court disaster.? You can tweak levels once you have a working, stable
By Donald S Brant Jr · #19151 ·
Re: Measurement problems, strange step noise floor behavior between 600-800kHz
You cannot connect this way and expect to get good results.? When you connect a coax cable to the T you are loading down with an impedance that will depend on the length of the coax and the scope
By Roger Need · #19150 ·
Re: Measurement problems, strange step noise floor behavior between 600-800kHz
Thank you Roger, this gives me some piece of mind.
By lschafer@... · #19149 ·