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 3. GQ EMF EF Meter RF Spectrum Power Analyzer
 How to differentiate RF source on same spectrum?		  New Topic  Reply to Topic
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The Invisible Rainbow

15 Posts
Posted - 03/25/2022 :  08:08:50  Show Profile  Reply with Quote
How to differentiate RF source on same 2.4GHz spectrum?

I am interested in identifying Bluetooth 4.0 Low Energy (LE) (2.4GHz - 2.4835GHz) - IoT BT Mesh network technology. Is there any way to differentiate Bluetooth LE, wireless router and microwave oven as they all operate on 2.4GHz spectrum? An emission source description at time of RF occurrence would make things clearer.

https://www.bluetooth.com/learn-about-bluetooth/tech-overview/

https://en.wikipedia.org/wiki/Bluetooth_Low_Energy#Technical_details

https://www.youtube.com/watch?v=5EKoEcSnXP0

I am interested in using the Digital RF browser to analyse bytes (packets) sent by Bluetooth Low Energy for IoT applications.
Reply #1

EmfDev

2250 Posts
Posted - 03/25/2022 :  12:55:16  Show Profile  Reply with Quote
It will be hard to implement and may need additional hardware.
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Reply #2

The Invisible Rainbow

15 Posts
Posted - 03/29/2022 :  01:20:14  Show Profile  Reply with Quote
So differentiation of emission source would be difficult because all devices are using the same 2.4GHz spectrum?

Does the Digital RF browser analyse wireless data packet traffic sent in bytes; but not other non-data devices?
For example, it would register data bytes sent from a wireless internet router, but it would not register with a microwave oven as their is no data being sent.

Thus, it should be able to pick up on Bluetooth Low Energy data packets in bytes too?
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Reply #3

EmfDev

2250 Posts
Posted - 03/30/2022 :  10:06:33  Show Profile  Reply with Quote
It may need a decoder. A phone can do it by just scanning around for WiFi or bluetooth signals.

Generally it detects RF levels/pulses (data or non-data) and just estimates the bytes.

It should be able to pick up RF as long as it is strong enough for it to be detected. It is hard to distiguish bluetooth/wifi/phone/microwave by the RF level since you can move one farther away or closer to vary the signal strength.
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