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jammer

(1) In cellphone terminology, a jammer is a device that blocks transmissions by creating interference. The jammer emits signals in the same frequency range that cell phones uses, and within the range of a jammer a cellphone user may lose their signal.

(2) In satellite terminology it is a mobile ultrahigh-frequency (UHF) high-power noise source that can be used to jam satellite antennas or receivers.







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