However, while there are large variations in exposure levels in the environment of fixed transmitting antennas, it is exceedingly rare for exposure levels to approach FCC
public exposure limits in accessible locations.
The algorithms embedded in these models assume marginal changes near economic equilibrium, and are heavily
reliant on small variations in demand that result from marginal changes in prices.
Because of the low power levels used, the intermittency
of these transmissions ("push-to-talk"), and due
to the fact that these radios are held away from the
head, they should not expose users to RF energy in excess of safe
limits. Hand-held "two-way" portable radios such as walkie-talkies are low-powered devices used to transmit and receive messages over
relatively short distances. Unlike cellular
telephones, which transmit continuously during a call,
two-way radios normally transmit only when the "push-to-talk" button is depressed.
Medusa renders Scarlett unconscious after acquiring certain knowledge from
her mind. This trope can be used in combination with several other tropes;
Through the Eyes of Madness, Darkness Equals Death, Quieter
Than Silence, Leave the Camera Running, Mind Screw, Kill the Lights, and Obscured Special Effects are some examples.
The combination of antennas and associated electronic equipment
is referred to as a cellular or PCS "base station" or "cell site."
Typical heights for free-standing base station towers or structures
are 50-200 feet.
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