2.4G RFID

Meanwhile we are working on an 2.4G active RFID project, a colleague told me this : "The RFID is using 13MHz"

me: it's 2.4GHz

colleague:  "I use a wire loop and checked on oscilloscope, it's 13MHz same as RFID card, the MEGAHERTZ it using is also 13MHz"

me: you cannot not use an oscilloscope to see a 2.4GHz stuff...