RF stands for radio frequency, and its radiation is a "nonionizing electromagnetic energy characterized by relatively long wavelength, low frequency, and low photon energy," according to the division of Environment, Health and Safety at Berkeley Lab. Microwave radiation is considered a subset of RF radiation. Different RF bands are used in "aeronautical radio, navigation, broadcasting, and personal wireless communication services," according to EHS, while "specific frequencies are designated for industrial, scientific, and medical uses." If microwaves were used, the technology is not rare, and more than one country could be using it. Most individuals reported that the sound or these other sensations seemed to originate from a particular direction and were perceived only when the individual was in a specific physical location.
coming dont go above the frequencies used for aircraft travel.
( z0 go :ARG1 ( z1 you ) :ARG1-of ( z2 come :ARG1 z1 ) :ARG4 ( z3 above :op ( z4 have-frequency :ARG1-of ( z5 use :ARG2 ( z6 travel :ARG0 ( z7 aircraft ) ) ) ) ) :mxde imperative :polarity - )
(z0 / go-01
    :ARG1 (z1 / you)
    :ARG1-of (z2 / come-01
                 :ARG1 z1)
    :ARG4 (z3 / above
              :op1 (z4 / have-frequency-91
                       :ARG1-of (z5 / use-01
                                    :ARG2 (z6 / travel-01
                                              :ARG0 (z7 / aircraft)))))
    :mode imperative
    :polarity -)
coming dont go above the frequencies used for aircraft travel .
z2 :ARG1 z1
z0 :polarity 0
z0 :mode 1
z0 :ARG1 z1
z0 :ARG1-of z2
z0 :ARG4 z3
z3 :op1 z4
z4 :ARG1-of z5
z6 :ARG0 z7
z5 :ARG2 z6