| 3 - System planning
Further important information on antenna usage
Reflecting surfaces
Electrically conducting surfaces (e.g. ceilings with metal constructions) can reflect the RF
signal.
The signal is reflected by the electrically conducting surface. At worst, the blue signal and
the red reflected signal are out of phase when they reach the receiver so that the two signals
cancel each other out.
▷ If you have electrically conducting surfaces in a room, make sure to position the
receiver or the antenna wall mounts so that such reflection effects are avoided.
➥ If you have a reflecting ceiling, this can be achieved by positioning the antenna
closer to the ceiling.
Blocking effects from other transmitters
As with all wireless microphone systems, suboptimal positioning of transmitters
can lead to blocking effects. To avoid this, please follow these recommendations:
▷ Position DECT telephone or DECT access points at least 7 m from the antenna.
▷ Position other wireless devices such as mobile phones at least 1 to 2 m from the
antenna.
▷ When transmitters are currently in use, you must not position any other
transmitters in the blocking area. If you must position them there, switch them off.
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