User's Manual
4
. Radio range
The transmitter is designed to have a radio signal range of
metres under optimum conditions.
The following conditions may result in a reduced range:
Signal transmission through building structures or
vegetation
Interference from TVs, computer monitors and mobile
phones. Under certain circumstances, this may prevent
the receiver from functioning at all.
Positioning of the transmitter at an unfavourable distance
from surfaces which reflect radio waves, for example floors
and walls. This may lead to the signal wave being weakened
or even cancelled out by the reflected wave.
Metallic objects reduce the range due to the shielding
eect of the metal.
Particularly in towns and cities, there may be many other
sources of radio waves which can disrupt the original signal.
Having units operating at similar frequencies located close
to one another may also result in mutual interference.