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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.?
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See there :
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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 !
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The complete study report is also available there :
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73 - Jean-Roger
 

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.
 

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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@...




 

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.
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US / Australia / New Zealand AM radio is full to bursting.

 

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.
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There are plenty of AM stations but I suspect FM users outstrip them by a magnitude or two.
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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.

Bruce Hawkins
 

AM is important becouse it covers better and is the source for emergency broadcast communication to the general public.?

I find that the problem with AM is too much ownership by a handful of companies, who aren't local. Making desiminating that local emergency communication often imposable.

Then there's the problem of local radio interference from power companies or other devices switching power supplies, or other sources.

My Honda Accord is quite quiet RF noise wise. But not all cars are.?

Satellite based broadcast is only available to those who can offord it.? I can't.

Best regards, Bruce Hawkins - AC6DN.? Sent from my Android phone.? And from: ac6dn@...

On Feb 6, 2025 2:12 AM, "Jean-Roger - F6EGK via groups.io" <F6EGK@...> wrote:
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

 

On Thu, Feb 6, 2025 at 10:28 PM, David A wrote:
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.
?
DAB isn't all that good and was allready surpassed by streaming when introduced. AM and FM are much more reliable. DAB is difficult to receive, even in urban environments you often need an outdoor antenna. And in the beginning receivers where very expensive.
Here in the EU (NL) it never really took on. It than was made mandatory for new cars. And a rule was introduced that every FM broadcasting station had to deliver a digital stream for DAB. Just to push DAB to the general public.
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Choose between the following:
- a system with wide range, low energy cheap receivers, still working with low signal with some noise and mono, good penetration into buildings.
- a short range system with high energy costly receivers, not working at all whith poor signals, mediocre penetration into buildings.
- a short range system with? many transmitters, receiver build in to your phone, good penetration into buildings.
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For me DAB stands for Dead At Birth.

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