Spectrum Analyzers?

classic Classic list List threaded Threaded
28 messages Options
12
Reply | Threaded
Open this post in threaded view
|

Spectrum Analyzers?

Romana
Can someone recommend a good cheap EMC spectrum analyzer which does the job properly? Or maybe package of two to analyze full spectrum.
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Plop Plop
Banned User
Please why do you think you need a spectrum analyser. What are you hoping to do with it?
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Karl
In reply to this post by Romana
Check Merializer's thread: http://es-forum.com/RTL-SDR-td4031391.html
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Miller
In reply to this post by Romana
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Merializer
In reply to this post by Romana
The sdr devices can be used as some kind of spectrum analyzer,
but scanning takes a really long time. it's not ideal but cheap.
1kHz to 2GHz:
https://www.sdrplay.com/rsp1a/

this is interesting but i don't know much about it:
50KHz to 960Mhz:
https://www.exp-tech.de/en/accessories/lab/measuring/8337/rf-explorer-wsub1g-digital-spectrum-analyzer
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Plop Plop
Banned User
In reply to this post by Plop Plop
If you are daft enough to think you are really going to benefit from a SA, and don't want to waste a load of money look up

 hp141t

on ebay.   Those in the industry say this is the best value for a learner. Like I described before the meter for £40  will be more usable.  The only point of a meter is to see if you have blocked the signal that is causing the problem.  Look up the material properties for Ali foil   and ferrite choke filters.   Its nor the frequency that causes the problems but the WATTS   This is Hz x amps  = WATTS.  This this the power or energy.  If its a problem if it ANYTHING other than light!
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Merializer
if watt is the problem, why is it then that a 1 battery powered wireless keyboard feels horrible ?
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Marc Martin
Administrator
> if watt is the problem, why is it then that a *1 battery* powered wireless keyboard feels horrible ?

Because watts aren't the problem.  :-)

Marc
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

earthworm
In reply to this post by Merializer

The WSUB1G+ RF-Explorer is probably like the 3G-combo ( that i have ) a solid build device and reasonably priced ( if you shop around a bit, in europe exp-tech.de is the best vendor ).
But it needs additional antennas ( if i am not mistaken ) below 15 MHz and preferably rather 50 MHz , which can be costly, like :
https://www.hamradio.co.uk/aerials-amateur-antennas-portable-antennas-wonder-portable-antennas/wonder-wand/wonder-wand-widebander-pd-2914.php
plus https://www.hamradio.co.uk/accessories-coax-connectors-and-adaptors/hamradio/cable-cab-so239-sma-65-pd-336.php
In the range from 50 KHz to 2 MHz you need a ferrite bead coil type antenna as well.
I am still looking out for cheap antennas that do the trick well enough for my purposes before getting also this new meter, which looks handy and useful within an important frequency range where most emf-detectors or -analysers do little or nothing.
More info : http://j3.rf-explorer.com/60-rfe/specifications/196-rf-explorer-wsub1g-plus
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Plop Plop
Banned User
In reply to this post by Marc Martin
Your biology evolved in none of this modern man made radiations. We have no sensory system to give us feedback until we are ill.  We successfully blocked or adapted to live in light.  We know have lots of new type energy shorting inside us with no defense.  Most people feel nothing until its too late.  A few of us have a total chance effect of feeling something but not by design.  Any wave length longer than light will short in us creating apparent voltage but with random patterns.  What magic patterns are you assigning to this shorting and why? What science supports your fantasy? What you ARE sensing  is real but in no way a reliable sense of what is happening or its threat to your biology. It is monkey thinking. In evolutionary terms it is a dinosaur with a Rubic cube.  Tres depasse.  Just cos you don't notice being shorted don't mean it ain't happening. Just that you ain't up to speed.  What we should be sensing and are not is how much shorting is happening and that is WATTS!
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Plop Plop
Banned User
Please explain if it is not watts what does cause problems?  I cannot guess what you might be thinking about.  Please forgive my astonishment.
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

earthworm
In reply to this post by Marc Martin
There is some truth in PlopPlops theory : the more watt the more burden and no experience of a burden does not mean there is none or little.
But there are other things at play as well like the frequencies and combination of them and their wave-forms and of course individual properties like body-size and -shape, diseases, substances like mercury located within ones body, degree of adaptability and probably lots of other factors, possibly even ones aura.
Noteworthy is here that everything is changing all the time, both the "individual" as her/his environment.
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

earthworm
In reply to this post by Plop Plop
There are quite a few corrupt or fake scientists that have claimed that RF from mobile phones can not possibly be any problem simply because these do not heat up ones brain substantially and dangerously.
End of discussion, proof all is well, as the telecom industry ( usually paying for the "research" ) told us already !
Actually any scientist that claim to know anything is a fake one, because all these eggheads have is a bunch of theories, like any other religion.
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Marc Martin
Administrator
In reply to this post by Plop Plop
I'm not really even sure why you've focused on watts, when of course there are other measurable electrical parameters, like voltage, amps, current, signal-to-noise ratio, waveforms, frequencies, etc.  Plus we have people here who insist that the biologically damaging parts of electricity are not even measurable by normal meters.

Just from a strict "how much am I reacting to this or that" viewpoint, one can easily see that watts is not the problem.  I can see that you are trying to address this from a theoretical standpoint, whereas my concern has always been practical (e.g. how can I survive going in this grocery store, this airport, this flight, this hotel room, etc.)

Marc

 
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Plop Plop
Banned User
How would you measure any of these if not in watts?   None can exist in abstraction.

like voltage, amps, current, signal-to-noise ratio, waveforms, frequencies, etc.

All thing in excess become toxic when they tip the scales into unwanted effects.   All voltages ie frequencies  loose their frequency at the point when they short and become WATTS of heating energy then.  They are no longer volts. They are unwanted kinetic energy in a system. WATTS. It does not matter where they came from. They add voltage to a system that was not wanting it in our biology.  The damage effect is now! in WATTS.      
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Plop Plop
Banned User
I am of course ignoring the extra special effects of the Holy Spirit!    This should be carefully added into all debate so as not to confuse things.  Magic potions and salts that make us more conductive will make us well too now wont they?   Feeling well is much more important than being well.  Cognitive dissonance rules KO!    I can see why the scientifics dismiss EHS as making it up.  Confusing into abstraction is not clarifying this pollution effect. Watts is what hurts. Define safety in terms of watts. Shorting powerproduced in the body. At least in non light exposures!
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Miller
Watts = Amps x Volts? I guess one could argue that enough watts will do anyone in.
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

Plop Plop
Banned User
Volts is a theoretical waveform.    The reality is that what we are exposed to is a mess. Waves are so complicated and messed up that they can often no longer be defined by wave length. Certainly 5G has problems with being defined now.   How do you define a wave so complex?  Ultimately you can only say how much photo energy it carries.   Frequency  gives a sense of false control and understanding which gives us confidence.  If you are talking about a piece of meat bombarded from all sides with patterns of photons how could you possibly know what is happening inside the "black box"  let alone a piece of living tissue.  Science is naive to think it can. So far they have not got it right. We are the witnesses. Evidence ignored.

No precautionary principle is being applied if the evidence is being actively ignored and where possible destroyed. This is not science then but Evil.

Wave theory says 2+2=2   I dont think that you have to be something special to spot the lie.

 Radiations don't add up. Why?  Cos they don't want them to.

What is the total power of coincidental ( banging into one another) sources?  On a quantum level it must be high. Their theory is that they wipe each other out. Mine is not always. They just don't know how to measure this yet.   The sad truth is that that our bodies are not on board with their theory but suffer the reality that is we get bio damage to our DNA and RNA. All exposed bio functions are effected. Affected where radiations were never anticipated in our evolutionary biology to go. Saying it cant happen cos it not in my book is a very flimsy argument for exposing people to new radiation especially if you are already fixing the evidences.

Where do I complain?  I cant. I have tried. Every where.  I just get ignored.

Any one feel the same way?
Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

earthworm
This post was updated on .
In reply to this post by Miller
Now we heard so much about watts, let's clarify that as far it matters it's actually mostly not so much the watts but rather the watt-hours or joules, which can wear us down.
Of course a split second of 100.000 Volt will kill you and a year of 1 volt, which is many more joules in the end, won't kill you.
So when the force is extremely strong, watts counts more then joules, but in general it is the other way around, and sometimes both matter, e.g. with repeated ultra-short pulses from smart-meters in some countries like the usa.

Anyway, the watt-theory is nonsense to begin with.
I do not see how someone can not see that.
Let's say someone hits you with a hammer.
A soft blow on your head may kill or severely damage you.
A hard blow on your upper leg probably only hurts for a day.
And then there are all sorts of hammers, rubber or steal, sharp or rounded.
And some people have harder skulls than others, or no brains to loose.
So watt is not the only factor here.
As it is not during exposure to emfs.
Now we deal with frequencies, not hammers.
Rounded and square ones.
These may resonate with our bodies or parts thereof.
These may interact with substances and micro-organisms within the body.
Some people have thicker skulls and myelin-sheaths than others.
How these protection layers work may depend on frequencies and wave-forms.
The same applies for the impact on all kinds of biological and other processes.
There are god only knows how many factors at play simultaneously.








Reply | Threaded
Open this post in threaded view
|

Re: Spectrum Analyzers?

earthworm
In reply to this post by Plop Plop

waves, watts, es, we are talking about theories.
some theories seem to work for some time within our field of experience.
all knowledge is nonsense, it's religion, or in other words : just belief.

in order to complain you need rights.
and with rights come duties.
it sounds like a tricky deal.
and we're just theorizing to begin with.
so the field of politics is a bit ridiculous.
being serious or not, we just fool around.


12