Panasonic WX-SA250P Operating Instructions Manual page 15

⿟ This system uses the same frequency (1.9 GHz) as other devices which use the DECT
standard, such as cordless phones. Using this system on the same floor as a cordless
phone or other DECT device may cause interferences and stuttering transmission.
⿟ Using this system in an environment surrounded by metal (copper, aluminum, iron, etc.)
walls, floor, or ceiling may cause the radio waves to be excessively reflected, resulting in a
phenomenon known as "multipath fading". Multipath fading can cause transmission errors
Important
(such as audio dropouts) even if the signal is strong enough.
⿟ Make sure that there are no objects such as concrete walls or metal panels (partitions,
wall-mounted lockers, doors, etc.) between the antenna and the microphone, as these
will obstruct the transmission of radio waves.
⿟ Placing the antenna at a low place could reduce its range.
Do not install the antenna in the following places
⿟ Places subject to vibration or strong shocks
⿟ Places exposed to large amounts of humidity and/or dust
⿟ Places where chemicals are being used, such as pools
⿟ Places with large amounts of steam or grease, such as kitchens
⿟ Near speakers, TVs, magnets, and other strong magnetic sources
⿟ Behind (from the microphone's perspective) blackboards, whiteboards, display,
projectors, etc.
⿟ Near sources of radiation, X-rays, or strong radio waves or magnetism
⿟ Inside metal casings (metal racks containing devices) or rooms whose ceiling or walls
are surrounded by metal
⿟ Near TVs, radios, computers, and other office automation appliances
⿟ Near CS digital broadcasting receivers (tuners, digital TV sets with internal tuners,
recorders, etc.)
⿟ Inside wagon trolleys surrounded by metal
⿟ Where there is a risk of damage from seawater or corrosive gases
⿟ Under direct sunlight
⿟ Places without roofs, directly exposed to the wind and rain
Wireless interference
⿟ Devices emitting strong radio noise may interfere with the antenna and make it unusable
when placed near it.
Ensure there is enough space between the antenna and such devices to avoid
interference.
(Note: Place the antenna at least 30 m (98.4 ft) away from cellular base stations)
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