EMF MeterManual (A6) V1.indd 13
2/14/18 1:41 PM
Notes on Signal Sources
•
Be aware that some EMF sources in the home, such as
cell phones, smart meters, and Wi-Fi emitters (RF
signals), change levels very rapidly due to protocol
denitions.
• Cell phones will adjust their levels based on the signal
strength from the cell tower and any intervening
obstacles to that signal.
• Smart-meters often send very fast signal bursts every few
seconds. And Wi-Fi routers adjust signal strength based
on the transfer load.
• LFM and LFE sources are usually more consistent, but, as
with RF signals, the device must be rotated to all
directions to nd the highest, and most accurate,
reading.
• Also, Users should be aware that measuring too close to
a transmitter will reduce the accuracy of the
measurement considerably. (Further reading on the
topic of near and far elds is advisable, and not covered
here.)
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