Re: TinySA Ultra generates signals while sweeping
Let's not further confuse the issue WRT Ionising and Non-Ionising radiation. Some folks are already scared enough...
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Martin
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#16898
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Re: TinySA Ultra generates signals while sweeping
Apparently photographic film across America, all a sudden, had unwanted spots and anomalies on them. There was a recall of film access the us. I think this was in the 1960's. This due to the above
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Bruce Hawkins <ac6dn@...>
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#16897
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Re: TinySA Ultra generates signals while sweeping
Not to mention all of the above ground nuclear testing during the late 1940's thru the 1960's prior to the nuclear test ban treaty! Sam Reaves ARS W3OHM Owner / Moderator of: LeCroy Owners Group on
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Sam Reaves
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#16896
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Re: TinySA Ultra generates signals while sweeping
I just checked mine Preamp off and no attenuation -60dBm. That is such a small value, that most of the on-line RF power convertors indicate it as 0 watts, because they can't show enough zeros behind
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Martin
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#16895
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Re: TinySA Ultra generates signals while sweeping
The Lo leakage is scientifically measurable, but imposable to effect you. I'd still would not store the unit turned on, between your legs. Nor any electronics. RF radiation hazard is about proximity
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Bruce Hawkins <ac6dn@...>
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#16894
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Re: TinySA Ultra generates signals while sweeping
Have you put two Safe and Sound Pro II devices side-by-side to quantify the RFI emissions from your Safe and Sound Pro II? I mean, as an electro hypersensitive person, you could quite possibly be made
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Joe F. KC8RKL
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#16893
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Re: TinySA Ultra generates signals while sweeping
Also look up the "Gibbs Phenomenon", which illustrates how a square wave is constructed fom the addition together of a sine wave and it's odd harmonics. The more harmonics, the closer the result is to
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Dave Daniel
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#16892
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Re: TinySA Ultra generates signals while sweeping
Hi people It's the LO sweeping ,coming via mixer leakage. A LNA will get it way down (reverse isolation) which Erik already hinted at...
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josephlevy
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#16891
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Re: TinySA Ultra generates signals while sweeping
Anything and everything digital generates RF energy, sometimes at high levels. Sweep your PC or laptop. Yes, it generates and radiates lots of RF energy. Even your smart phone intentionally generates
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W0LEV
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#16890
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Re: TinySA Ultra generates signals while sweeping
EVERY device that contains digital electronics will emit a tiny amount of RF. That includes the calculator sitting on your desk, the quartz clock hanging on the wall, your digital camera, any alarm
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Jim Shorney
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#16889
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Re: TinySA Ultra generates signals while sweeping
An RF related device which has a microprocessor running at RF frequencies and RF generating components which emits finite amounts of RF. Who would have thunk it?
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Matt Harris
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#16888
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Re: TinySA Ultra generates signals while sweeping
Maybe it does, but have you calculated just how low a value of radiated power that equates to ? https://www.trance-cat.com/electrical-circuit-calculators/en/rf-power-density-calculator.php It is
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Martin
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#16887
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Re: TinySA Ultra generates signals while sweeping
Can you test if enabling the build-in LNA (LEVEL/LNA) suppresses this leakage sufficiently? -- Designer of the tinySA For more info go to https://tinysa.org/wiki/
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Erik Kaashoek
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#16886
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TinySA Ultra generates signals while sweeping
Hello guys, My new TinySA Ultra generates signals while sweeping. I have a Safe and Sound Pro II meter and it detects levels of up to 2,500 ?W/m? of RF signals when placed close to the TinySA
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torito1774@...
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#16885
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Re: Does magnetic field interferes TinySA measurements?
#tinysa
Erm, no. Thankfullly no magnetic tape is used in the Tiny SA / Ultra ;-) - Andy -
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Andy G0FTD
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#16884
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Re: Does magnetic field interferes TinySA measurements?
#tinysa
Normally not, unless the amplifier of the speaker is a bad class D (digital) amplifier This only happens when you connect a antenna or an E-field sensor, not if you use a coax to connect to a source
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Erik Kaashoek
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#16883
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Re: Does magnetic field interferes TinySA measurements?
#tinysa
Thank you! Does it mean that having a speaker connected to TinySA will introduce some kind of interference? In one of your video tutorial there was mentioned that TinySA connected to PC via usb cable
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undeclarede@...
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#16882
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Re: Does magnetic field interferes TinySA measurements?
#tinysa
As long as the tinySA is not electrically connected to the speaker there should be no problem -- Designer of the tinySA For more info go to https://tinysa.org/wiki/
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Erik Kaashoek
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#16881
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Does magnetic field interferes TinySA measurements?
#tinysa
I use TinySA in environment very close to speakers that produce magnetic field and currents and have concerns how speakers can affect measurements of TinySA? Should it be isolated from such sources or
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undeclarede@...
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#16880
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Re: Mirfield Electronics
Mine was the latest for one device and the other would have been the latest if not for an update between ordering and delivery. I had not even considered that he would have done that (thought that
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M0CNL
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#16879
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