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Re: Document on TinySA Ultra

 

Kurt, are you aware that the sellers of the SA-5 replaced the picture and turned this document into a manual that they send with every analyzer sold?
?
John
Re: TinySA - A use case in a professionnal field measurement context

 

Here in New Zealand DAB is dead, they did a trial then killed it.? Probably because streaming offered much of the same advantages without the need to invest in new hardware and little interest was shown by the public in DAB.? A shame but that is how it goes sometimes.
?
There are plenty of AM stations but I suspect FM users outstrip them by a magnitude or two.
?
The real driver of AM now is USA politics where it is being mandated for all new car because of the claim it what listeners are demanding.? While there is a notable market segment for AM listeners in the USA I suspect the truth of the demand may be misleading.
Re: TinySA - A use case in a professionnal field measurement context

 

On Thu, Feb 6, 2025 at 10:21 AM, Jon Hall wrote:
that's an interesting set up [ for other puposes as well]
but the AM band is surely not tht popular, with FM / DAB being so wide spread.
British RF landscape ≠? Rest of world RF landscape.
?
US / Australia / New Zealand AM radio is full to bursting.
Re: TinySA - A use case in a professionnal field measurement context

 

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Here’s another use case using the TinySA Ultra. This article describes how interference to a wireless gasoline station pricing sign was located. While most of the measurements were performed using a professional Tektronix spectrum analyzer, there were certain measurements taken clandestinely using the smaller analyzer.



______________________
Kenneth Wyatt
wyattphoto@...




Re: Document on TinySA Ultra

 

Great document. Clarified some things I couldn't work out. Thanks!

Re: TinySA - A use case in a professionnal field measurement context

 

that's an interesting set up [ for other puposes as well]
but the AM band is surely not tht popular, with FM / DAB being so wide spread.

Re: Document on TinySA Ultra

 

Kurt,
Thank You very much for sharing this document.
Regards,
ToniZG

TinySA - A use case in a professionnal field measurement context

 

The NRSC (National Radio System Committee) in the US landscape, has published a study examining the effects of RF noise on AM radio reception in cars.?
?
See there :
?
What is interesting is the fact that a TinySA is one part of the measurement system, as depicted below. It highlights once again that Erik's tools have also a place of choice in a professionnal field, congratulations !
?
?
The complete study report is also available there :
?
73 - Jean-Roger

Document on TinySA Ultra

 

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Hi All

It still exist the document I made on TinySA Ultra. An updated revision is soon on the way

Kind regards

Kurt

TinySA Ultra Menu-Tree Chart - v1.4-104 - Updated July 20, 2023_V5.pdf
TinySA Ultra Menu-Tree Chart - v1.4-104 - Updated July 20, 2023_V5.pdf

Re: How to get a quick EMV approval with tinySA Ultra?

 

He has realized what I wrote in the "pointed" (maybe demeaning?) email.? Have a read of my latest email as a beginning primer.? I can walk him through the learning curve, but it will take time on both our parts.? The learning curve will not be instant.? I've given him a good starting point.

He can learn the ins and outs of using the spectrum analyzer while learning his ambient RF environment at the same time.? In addition to the Rhode&Schwarz tutorial, I've also given him tutorials on the general use of the spectrum analyzer from both Agilent and Tektronix.? My last email to him also included nominal frequencies of what he is likely to detect in his local RF environment.? It's a good starter exercise in both respects.?? ??

You can't "buy" knowledge and skills to function in any field.? Even the trades require a bit of time and investment on one's own part and the part of a dedicated mentor.?

Dave - W?LEV

Virus-free.


On Wed, Feb 5, 2025 at 4:14?AM Bill Blodgett via <whb5k=icloud.com@groups.io> wrote:
Not rude Zack, but certainly demeaning.? Some may have missed a couple of days in ”Mr. Lynn’s Finishing School”. ?

73,
Bill?
AI5RP
++++++++++++++++
Bill Blodgett
Arlington, Texas


On Feb 4, 2025, at 12:06?PM, Zack Widup via <w9sz.zack=gmail.com@groups.io> wrote:

?
I'm not sure what you're referring to? You didn't quote any text and I haven't seen any replies that were particularly rude.

Zack W9SZ

On Tue, Feb 4, 2025 at 11:19?AM GeoffersB via <geoffrey=boult.org@groups.io> wrote:
It always distresses me when people who are obviously very clever and experienced refuse to afford the politeness and assistance that they were no doubt offered when they were beginning in a field. You don't have to be rude in order to prove your superior intelligence. But there, clearly I expect too much of humanity. AI will not doubt do better.


Virus-free.



--
Dave - W?LEV


Re: [nanovna-users] Extra QEX copy

 

All,

The extra copy of QEX has ?been spoken for.

DaveD
KC0WJN


On Wed, Feb 5, 2025 at 12:56 Dave Daniel via <kc0wjn=gmail.com@groups.io> wrote:
Does anyone want a copy of the January/February 2025 issue of QEX? The ARRL
sent me two copies. It has the tinySA tracking generator design article in
it.

Of so *respond to me privately* at

kc0wjn at gmail dot com

Responses to the list will be ignored.

The magazine is free; shipping cost from 32754 USA to be paid to me by
PayPal F&F (the shipping cost using USPS Media Mail is probably trivial).

DaveD
KC0WJN





Extra QEX copy

 

Does anyone want a copy of the January/February 2025 issue of QEX? The ARRL sent me two copies. It has the tinySA tracking generator design article in it.

Of so *respond to me privately* at

kc0wjn at gmail dot com

Responses to the list will be ignored.

The magazine is free; shipping cost from 32754 USA to be paid to me by PayPal F&F (the shipping cost using USPS Media Mail is probably trivial).

DaveD
KC0WJN

Re: Spectrum Analyzer / RF 101 and consultants

 

I forgot a few items - what else is new....

1)? Conducted Emissions:? 150 kHz through 30 MHz

2)? Radiated Emissions:? 30 MHz through the fifth harmonic of the highest clock frequency or 40 GHz (FCC).

When doing conducted emissions, you will need a LISN (Line Isolation and Stabilization Network) and/or a calibrated current probe.?

CAUTION (Conducted Emissions):? Connect your SA (Spectrum Analyzer) ONLY after the DUT is connected and ON.? If you turn the DUT ON while the SA is connected to the current probe and/or the LISN, you stand an excellent chance of blowing the front end of the SA.? It's best to use a transient suppressor/limiter like the MiniCircuits VLM-33W-2W-S+.? A bit of advice from an old fossil in the field:? Leave the limiter connected to the input of your SA permanently.

Dave - W?LEV

Dave - W?LEV



Virus-free.


On Wed, Feb 5, 2025 at 4:35?PM David Eckhardt <davearea51a@...> wrote:
Yes, the Rhode&Schwarz videos on spectrum analyzers are highly recommended.? That would be an excellent first step as you first need to know how to use your new instrument.?

Here is another from Aglient (ex-HP):

????

And another from Tektronix with an expanded tutorial at the end:

????

While you are learning the basics of the spectrum analyzer and maybe a few other instruments associated with it there are additional local environment associated parameters you need to become familiar with.? Since you do not have a semi-anechoic chamber (lots of $$$$$$), you will need to become familiar with your RF ambient environment.? To do a good job of pre-compliance you need to become familiar with all the RF sources in your area:? WiFi, home solar installations, AM broadcasters, FM broadcasters, TV broadcasters, public services, cell phone towers (be sure yours is OFF while testing), baby monitors, wall warts, appliances, switch mode power supplies (these will be embedded in appliances), ..... ,,,,, ..... what have I missed.? When evaluating a product for emissions, all these and some I've forgotten will be eliminated as radiating from the DUT (Device Under Test).?

Here is a starter on what to look for regarding ambients:

AM Broadcast:? 550 to 1700 kHz? (applies only to conducted emissions)
FM Broadcast:? 88 through 108 MHz
WiFi:? 2.4 ± and 1.85 ± GHz
Home Solar Installations:? Broadband unstable emissions:? LF through possibly VHF
TV Broadcasters:? 54 through 225 MHz and 470 through 700 MHz in 6 MHz "chunks"
Public Service:? 150 through 174 MHz and 700 through 800 MHz
Cell Phone (personal and towers):? 850 ± MHz and 1.9 ± GHz
Baby Monitors:? VHF and UHF
Wall Warts:? These are switch mode power supplies:? 20 kHz through 80 MHz - broadband and
? ? ? ? ? ? ? ? ? ? ? unstable
Appliances:? Similar to "Wall Warts:
GMRS and FRS:? 462.5 through 468 MHz (this is FM)
Amateur Radio:? Consult the following URL: ?
Citizen Band:? 27 ± MHz?
Anything I've forgotten:? 20 kHz through xxx GHz

Some of these are "ON" 24/7/365 and others are intermittent.? For those which are intermittent, it's good to use the "MAX HOLD" function on the spectrum analyzer.?

That should get you going.

Dave - W?LEV












?'r et ve

Virus-free.

On Wed, Feb 5, 2025 at 6:51?AM larmstead24 via <larmstead24=icloud.com@groups.io> wrote:
I apologize in advance if this is a dumb question but I need guidance.? I have a Tinysa spectrum analyzer but I am completely new to radio frequencies and the spectrum world but NEED to learn as soon as possible.? All the book search results I have found so far seem advanced because I am not even familiar with the terminology.? Can anyone tell me where to start? I am not a techie.? Any beginner’s resource for dummies will help. ?
?
Also, are there people/consultants out there who you can pay to advise you on how to set your spectrum analyzer based on what you are trying to capture and who will interpret the results for you? If so, what are they called (so I can search the web), and/or where can I find a reputableone?
?
Thank you very much.



--
Dave - W?LEV




--
Dave - W?LEV


Re: Spectrum Analyzer / RF 101 and consultants

 

Yes, the Rhode&Schwarz videos on spectrum analyzers are highly recommended.? That would be an excellent first step as you first need to know how to use your new instrument.?

Here is another from Aglient (ex-HP):

????

And another from Tektronix with an expanded tutorial at the end:

????

While you are learning the basics of the spectrum analyzer and maybe a few other instruments associated with it there are additional local environment associated parameters you need to become familiar with.? Since you do not have a semi-anechoic chamber (lots of $$$$$$), you will need to become familiar with your RF ambient environment.? To do a good job of pre-compliance you need to become familiar with all the RF sources in your area:? WiFi, home solar installations, AM broadcasters, FM broadcasters, TV broadcasters, public services, cell phone towers (be sure yours is OFF while testing), baby monitors, wall warts, appliances, switch mode power supplies (these will be embedded in appliances), ..... ,,,,, ..... what have I missed.? When evaluating a product for emissions, all these and some I've forgotten will be eliminated as radiating from the DUT (Device Under Test).?

Here is a starter on what to look for regarding ambients:

AM Broadcast:? 550 to 1700 kHz? (applies only to conducted emissions)
FM Broadcast:? 88 through 108 MHz
WiFi:? 2.4 ± and 1.85 ± GHz
Home Solar Installations:? Broadband unstable emissions:? LF through possibly VHF
TV Broadcasters:? 54 through 225 MHz and 470 through 700 MHz in 6 MHz "chunks"
Public Service:? 150 through 174 MHz and 700 through 800 MHz
Cell Phone (personal and towers):? 850 ± MHz and 1.9 ± GHz
Baby Monitors:? VHF and UHF
Wall Warts:? These are switch mode power supplies:? 20 kHz through 80 MHz - broadband and
? ? ? ? ? ? ? ? ? ? ? unstable
Appliances:? Similar to "Wall Warts:
GMRS and FRS:? 462.5 through 468 MHz (this is FM)
Amateur Radio:? Consult the following URL: ?
Citizen Band:? 27 ± MHz?
Anything I've forgotten:? 20 kHz through xxx GHz

Some of these are "ON" 24/7/365 and others are intermittent.? For those which are intermittent, it's good to use the "MAX HOLD" function on the spectrum analyzer.?

That should get you going.

Dave - W?LEV












?'r et ve

Virus-free.


On Wed, Feb 5, 2025 at 6:51?AM larmstead24 via <larmstead24=icloud.com@groups.io> wrote:
I apologize in advance if this is a dumb question but I need guidance.? I have a Tinysa spectrum analyzer but I am completely new to radio frequencies and the spectrum world but NEED to learn as soon as possible.? All the book search results I have found so far seem advanced because I am not even familiar with the terminology.? Can anyone tell me where to start? I am not a techie.? Any beginner’s resource for dummies will help. ?
?
Also, are there people/consultants out there who you can pay to advise you on how to set your spectrum analyzer based on what you are trying to capture and who will interpret the results for you? If so, what are they called (so I can search the web), and/or where can I find a reputableone?
?
Thank you very much.



--
Dave - W?LEV


Re: Spectrum Analyzer / RF 101 and consultants

 

Rohde&Schwartz has a series of videos on YouTube that explains the general function of spectrum analyzers. If you new to a spectrum analyzer this would be a start to understand the basic terminology just search for them.Then go to the Tinysa.org site and look at the videos specifically to this analyzer.
?
John

Re: Determining antenna factor

 

Hi Dan,
?
The reason antenna factor is not well-known is because the only technical folks that care about it are EMC test people doing FCC and European compliance measurements. ?Broadcast engineers and hams care more about antenna gain. ?
?
One of the reasons EMC test antennas are so expensive is because they usually come with an antenna factor calibration chart often custom for each serial number shipped.
?
Fun stuff! ?Now all I need is an anechoic chamber. ?;-)
?
-Charlie
?W5CDT
?
?

Re: Determining antenna factor

 

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My participation is not intended to bring back my science (in French) but to propose a synthesis that I had a little trouble writing. It is in the attached PDF and it is in French because of the formulas.

--

F1AMM

Fran?ois

De la part de Dan Heather via groups.io
贰苍惫辞测é?: mercredi 5 février 2025 13:22

Conversion.pdf
Conversion.pdf

Re: QtTinySA update to v1.0.2 #software

 

I didn't build the executables on my machine this time, I used Github workflow pyinstaller 'actions', which I had to learn how to do and then experiment with to get it right.? ?When I downloaded the result to my machine, Windows Defender did not flag up any problems with it.? I am pretty certain that I do not have any virus on my PC because I almost never use Windows on it and it is fully up to date with MS security patches and Windows Defender scans show nothing.? I have also tried the 'nuitka' compiler but that was worse.? It's possible that I have some Python packages that are out of date on my Windows machine,.
??
I give up.? I will top building it for Windows and attempting to support Windows users since I have no use for a Windows version and I will delete the Windows exectutables.
?
Ian

Re: Determining antenna factor

 

Thanks Charlie!
?
I've been a Ham since 1960 and I never recall hearing about something called "antenna Factor".? Hardly a day goes by when I don't learn something new and you've supplied that wonder today!
?
So I decided to ask my favorite AIl service about antenna factor.? I use a service from Google called Gemini (gemini.google.com).? Here is "it's" answer proving that AI can sometimes be very useful!
?
=================================

The term "Antenna Factor" refers to the ratio between the electric field strength of an electromagnetic wave and the voltage that the antenna receives from that wave. It's a way to quantify how efficiently an antenna converts electromagnetic energy into a measurable voltage.

?
Antenna Factor concept

Key points about Antenna Factor:

  • Units: Antenna factor is typically expressed in decibels per meter (dB/m).
  • Frequency dependence: Antenna factor varies with the frequency of the electromagnetic wave. Antennas are designed to be most efficient at specific frequencies or frequency ranges.
  • Use in measurements: Antenna factor is crucial in electromagnetic interference (EMI) testing and other applications where it's necessary to determine the actual electric field strength. By adding the antenna factor (in dB/m) to the voltage measured at the antenna output (in dB?V), you can calculate the electric field strength (in dB?V/m).

Example:

Let's say you're measuring the electric field strength of a radio wave using an antenna. The voltage measured at the antenna output is 50 dB?V, and the antenna factor at the frequency of the radio wave is 10 dB/m. To calculate the electric field strength, you would add these two values:

Electric field strength = 50 dB?V + 10 dB/m = 60 dB?V/m

This means that the electric field strength of the radio wave is 60 decibels above 1 microvolt per meter.

In summary, the antenna factor is a critical parameter that helps relate the voltage received by an antenna to the actual electric field strength of an electromagnetic wave. It's essential for accurate measurements in various applications, including EMI testing, wireless communication, and radar systems.

===========================

?

Thanks again Charlie!

?
--
Dan Mail Photo.jpg
Dan N1DH
Middleboro MA

Re: How to get a quick EMV approval with tinySA Ultra?

 

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Hi Rainer

I think there is in particular one participants which should apologize to you for being very rude.
That said your request from help has not lead to any practical guidance, and you explained clearly what you was trying to do, and that should have prompted to provide help not criticism.

I have done such tests like you search for doing a couple of times and want to give you some hint to get going, but only by direct mail else I will be subject to being flamed as well?
I found ? which I anticipate is you and please mail me direct to kurt@...

Kind regards

kurt

?

Fra: tinysa@groups.io <tinysa@groups.io> P? vegne af Rainer Hantsch
Sendt: 4. februar 2025 22:47
Til: tinysa@groups.io
Emne: Re: [tinysa] How to get a quick EMV approval with tinySA Ultra?

?

I kindly apologize for having caused all this discussion.

?

Please, I would like to end this thread.

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