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Part two, did not read most of them, usually I link official science papers (peer reviewed) but I can't find it in my archive so I dug out these for anyone interested.

Again, hope I'm not spamming forum. If my previous post is incorrect I'm always opened for debate and most of the claims are my understanding of many different areas of physics and my interpretation of many unexplained experiments combined with alternative explanations from other much smarter people, living today and not among us anymore.

Links are somewhat in an increasing order, sorted by difficulty.

On Fri, Dec 6, 2024 at 7:37?PM Igor Feher via <igor.feher=[email protected]> wrote:

What is a difference between different photons on electromagnetic spectrum from radio, to visible light to neutron, expect for the frequency and observable field size?

On Fri, Dec 6, 2024 at 6:24?PM W0LEV via <davearea51a=[email protected]> wrote:

Neutrons are particulate, NOT electromagnetic energy!?

And,.....many additional comments I'll leave unwritten........

Dave - W?LEV

On Fri, Dec 6, 2024 at 8:36?AM Igor Feher via <igor.feher=[email protected]> wrote:

Frequency of electro-magnetic waves (from neutron to light to radio) is dependent on capacitance. Higher the charge lower the capacitance, meaning high frequency radiation will not penetrate deep, but will cause surface damage if induction is possible. For that reason IR radiation will penetrate much more than UV radiation but IR will go through thick walls while UV will not. Special coating excluded. So if you want to see high frequency light penetrating shielding or plastic you need brutal amounts of coherent delivery to the small spot as opposed to low frequency photos called neutrons. Effect on inductive vs high dielectric material is also very different. The moment light induces it transforms to other frequencies and will eventually stop penetrating If it does not induce it continues passing through medium. Every material has unique phases and densities of available space for wave to induce so interactions can a be bit more complex to explain. In general light is HUGE compared to atoms and molecules but 99.9999% of atoms are used space. That used space fluctuates so if wave is synchronous it may pass. Christaline structure supraconductors (superconductors is also used but original word back in the days was supra not super) for example are synchronised in motion so light can induce indefinitely. Passing through different densities will cause change in charge/inductance or frequency with losses if any. Neutrons will pass through whole earth and continue for a very long time and that spectrum range (alpha, beta, gama) will cause random noise in computers and transistors and thus temporary failures in computers. CPU will generally execute every instruction 3 times but only one iteration is reported. If all 3 match it is a pass. This is an issue in server farms, for ordinary users not so much. That is also the reason why in the old days 386 and some 486 were only CPUs that we could send to space. All newer would fail because of radiation.

That being said you put your head next to electrical wires, and there is A LOT of energy dissipated from LEDs for example,switchers etc in from of electromagnetic radiation. There is so little energy there to be induced that you need not worry about it. If you have highly sensitive (hypothetical) and tuned antennae that does not exist you can fry it if you get close to it because YOU yourself are a very good antennae and will pass signals. Take BC107 transistor and hold its base (leg) and observe how it becomes conductive. Take comparator (Op. amps) and hold one leg (in amplifier or comparator configuration) and observe the crazy signals coming through you. Like ECG. Like EKG. Like all kinds of pulses your body generates + 50/60Hz if you are not far away from ANY power infrastructure.

So in short, high frequency light carries lots of charge in very small "space" - high capacitance. It will therefore induce itself in anything and deliver all that energy in one spot. That is why UV is dangerous to living compounds, it damages them. Low frequency light will induce over longer distances and will gradually fall apart and penetrate deeper while the amount of energy delivered in total is about equal. Therefore anything above a 10 GHz will completely stop on a sheet of paper. If you use tuned conductor it will induce and you will be able to measure it. But it won't fry anything unless amplified and for amplification you need POWER.

On Fri, Dec 6, 2024 at 12:18?AM Geoff Peters - AB6BT via <AB6BT=[email protected]> wrote:

All electromagnetic radiation consists of photons!

Reference:

On 12/5/2024 3:10 PM, Don Safer via wrote:

Aren't X-rays photons? Are you thinking of X band? (8-12 GHz)

?

===========

---------- Original Message ----------
From: "Bob Ecclestone via " <becclest@...>
To: [email protected]
Subject: Re: [tinysa] TinySA safety
Date: Fri, 6 Dec 2024 10:04:37 +1100

If you are concerned about damage while powered down, just put a termination or SOLT Short on the connector.
I trust you are using Connector Savers as well:-)
Cheers...Bob VK2ZRE

On 6/12/2024 1:48 am, Zack Widup via wrote:

I would be far more concerned about the effects of x-rays on my body than on a TinySA. At the power level that may harm a TinySA, you had better be wearing a protective suit.

?

Zack W9SZ

On Thu, Dec 5, 2024 at 6:21?AM Geoff KE0BNX via <geochaben=[email protected]> wrote:

This is what gets me worried:

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"the +10dBm maximum input level is a limit in any RF frequency band, even if the tinySA is powered off. As an example, the tinySA will not detect a microwave oven (2.4GHz) on the screen but can be very well damaged by it. Similarly, other strong out of band sources won’t be detected by the tinySA, but can still induce enough RF power to damage the RF circuitry.? With the telescopic antenna connected, susceptibility doesn’t depend on the tinySA being ON or OFF because the antenna will receive that powerful signal and will inject it into the spectrum analyzer, with serious risk of damage.? Best practice is to not store or leave the tinySA in a strong RF environment (i.e. next to a cellphone or radio transmitter) with the antenna attached when turned off."

?

Which is why I was concerned about X-rays, which are just higher frequency RF.

?

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--

SOFTECH, IGOR FEHER S.P.
Liminjanska cesta 96
6320 Portoro?

Slovenija

E-po?ta: igor.feher@...

Tel: +386 41 872 601

--

Dave - W?LEV

--

SOFTECH, IGOR FEHER S.P.
Liminjanska cesta 96
6320 Portoro?

Slovenija

E-po?ta: igor.feher@...

Tel: +386 41 872 601

--

SOFTECH, IGOR FEHER S.P.
Liminjanska cesta 96
6320 Portoro?

Slovenija

E-po?ta: igor.feher@...

Tel: +386 41 872 601