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14. Range
The transmission range of the radio signals to the base station is
300 ft. under optimum conditions. This is often described as the “free
field range”.
This ideal arrangement (e.g. base station and outdoor sen-
sor on a smooth, level field without trees, houses etc.) is,
however, never found in practice.
Normally, the base station is set up in the house, the combination in the
garden and further outdoor sensors, for example in ancillary buildings
or garage.
The range can be reduced considerably partly through:
• walls, reinforced steel ceilings
• coated/layered insulation glass panes
• vehicles
• trees, bushes, earth, rocks
• closeness to metal & conductive objects (e.g. radiators)
• closeness to the human body
• broadband disturbances, e.g. in residential area (DECT telephones,
mobile telephones, radio head-phones, radio loudspeakers, other
radio weather stations, baby phones etc.)
• closeness to electric motors. Transformers, network parts pr com-
puters
• closeness to poorly shielded or openly operated computers or other
electrical devices
As the local circumstances are different at every place of set-up,
a certain range cannot be guaranteed.
If the base station is receiving no data from the combination
sensor or any additionally existing outdoor sensors (in spite of
new batteries), reduce the distance between the outdoor sensors
and the base station, change the place of set-up
Observe chapter 7 and 13 of these operating instructions..
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