[ EE ] messing about with NFC

[Brooke Clarke]

Hi Gus:

I"d guess either Bluetooth or WiFi.  Bluetooth has a big advantage in that it uses less power and shorter range (more
private) , so it's 2.4 GHz because they both use the same band.
https://en.wikipedia.org/wiki/Bluetooth#Implementation
https://en.wikipedia.org/wiki/Wi-Fi#Wi-Fi_radio_spectrum

Note both 13.56 MHz and 2.4 MHz are unlicensed ISM bands.
https://en.wikipedia.org/wiki/ISM_band#Frequency_allocation

You might be able to see the Bluetooth or WiFi signal using a computer, cell phone, or pad by going to the
tools/Bluetooth or tools/WiFi and looking for signals.  If you use the Android app then it's would be easy to see.
--
Have Fun,

Brooke Clarke< N6GCE
https://www.PRC68.com
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