That sure is a Bluetooth frequency! Europe & USA: 2400 - 2483.5 MHz
from Bluetooth.com: Bluetooth technology operates in the unlicensed industrial, scientific and medical (ISM) band at 2.4 to 2.485 GHz, using a spread spectrum, frequency hopping, full-duplex signal at a nominal rate of 1600 hops/sec. The 2.4 GHz ISM band is available and unlicensed in most countries
But we still don't know about the protocol being used.
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2425MHz (or 2.425 GHz)
That sure is a Bluetooth frequency!
Europe & USA: 2400 - 2483.5 MHz
from Bluetooth.com:
Bluetooth technology operates in the unlicensed industrial, scientific and medical (ISM) band at 2.4 to 2.485 GHz, using a spread spectrum, frequency hopping, full-duplex signal at a nominal rate of 1600 hops/sec. The 2.4 GHz ISM band is available and unlicensed in most countries
But we still don't know about the protocol being used.