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314 posts

Ultimate Geek


# 127074 29-Jul-2013 11:11
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Hi there guys

I got my RTL832u stick in the post, about 2 weeks ago, and it's amazing what I can recieve in my area with a small antenna.

I've already figured out how to decode pagers, and it's fascinating to watch all the text come up on the screen.

Round about 152mhz, I hear this strange tone. I know it's data of some sort, but I'm not sure what kind.

I've taken a 7 second sample of what I'm hearing, hopefully somebody here will know.
Here's the link.

https://mega.co.nz/#!EFVh3DoT!Q41DIX99XXMPAQ7XjSlZckOz6sYQHVcYMOl4dfUrcBM

Would somebody who knows what it is please let me know?

 

Thanks

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2458 posts

Uber Geek


  # 867794 29-Jul-2013 13:01
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One good place to check would be http://www.rsm.govt.nz/smart-web/smart/page/-smart/domain/licence/SelectLicencePage.wdk

To my untrained ear, it sounds like a beacon of some kind..



314 posts

Ultimate Geek


  # 868032 29-Jul-2013 19:10
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kyhwana2: One good place to check would be http://www.rsm.govt.nz/smart-web/smart/page/-smart/domain/licence/SelectLicencePage.wdk

To my untrained ear, it sounds like a beacon of some kind..


 

I did what you suggested. It's licensed to Vector.

Question is, what would they be using it for??

 
 
 
 


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Uber Geek


  # 868034 29-Jul-2013 19:24
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PaulZA: 
I did what you suggested. It's licensed to Vector.

Question is, what would they be using it for??


My guess would be data being sent to/from a remote monitoring site? Or perhaps SCADA.

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Biddle Corp
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  # 868108 29-Jul-2013 21:20
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There are literally hundreds of frequencies used for radio telemetry. This is nothing unique.



Overarching undertones
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Uber Geek

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  # 868267 30-Jul-2013 06:34
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sbiddle: There are literally hundreds of frequencies used for radio telemetry. This is nothing unique.




No-one suggested it was unique - the OP was simply intrigued to know what it is.

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Uber Geek


  # 868293 30-Jul-2013 08:35
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What's the exact frequency? Can you post a picture of the waveform?

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Uber Geek


  # 868316 30-Jul-2013 09:01
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PaulZA:
kyhwana2: One good place to check would be http://www.rsm.govt.nz/smart-web/smart/page/-smart/domain/licence/SelectLicencePage.wdk

To my untrained ear, it sounds like a beacon of some kind..


 

I did what you suggested. It's licensed to Vector.

Question is, what would they be using it for??


What is the TX location? that will give some idea of what is likely to be ...

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