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Portable devices measuring radiofrequency electromagnetic fields (RF‐EMF) are affected by crosstalk: signals originating in one frequency band that are unintentionally registered in another. If this is not corrected, total exposure to RF‐EMF is biased, particularly affecting closely spaced frequency bands such as GSM 1800 downlink (1,805–1,880 MHz), DECT (1,880–1,900 MHz), and UMTS uplink (1,920–1,980...
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