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WS2010-12 REPEATER

For use with LaCrosse Technology's WS2010, WS2210 & WS7015

Despite the initially high transmission range of the Remote Controlled Weather Sensors of up to 328 feet (100 m), in some cases, limitations of these transmission ranges may occur due to external interference such as steel/concrete constructions, radio waves, computer monitors, electronic household products, etc.  The use of the Weather Sensors within large areas such as horticulture facilities may also show ineffective transmission ranges.   In such a case, the Repeater provides the solution.  It multiplies the Remote Controlled Weather Sensor's transmission range by storing and re-transmitting the data transmitted by the Weather Sensor(s) to the Professional Wireless Weather Station (base receiver).  In doing so, transmission ranges (also by use of several Repeaters) of several hundred feet/meters can easily be achieved and interference from electrical devices operating on the 433MHz signal frequency or interference from surrounding environment can thus be minimized.

When using several Repeaters (cascaded operation), there is a transmission time delay caused by re-transmission of the same frequency signal to the next Repeater and so on.  If multiple Repeaters are in use, the time delay of re-transmission will be longer.  In addition, the time delay transmission must be extended to avoid signal cross over transmission from the Weather Sensor(s).  If only one Repeater is used, there will be no time delay.

Transmission Distances and Interferences:

	The Repeater operates in the 433 MHz range which is also used by other radio transmission services.  Units operating at identical or close by frequencies may therefore cause limitations in operation and transmission range.
	The given transmission range of up to 328 feet (100 m) pertains to the distance over open field, i.e. the transmission distance at sight contact between Repeater and the base receiver unit.  During practical use, however, walls, ceilings, etc. between the Repeater and the base receiver will reduce the transmission ranges.

Further causes for reduced transmission distances:

	High frequency interference of any kind.
	Construction and vegetation of any kind.
	Conducting matter leading to field distortions or field attenuation may be in the near vicinity of the units and/or within or close to the path of transmission.
	The distance between the Repeater or base receiver unit and conducting surfaces or matters (also the ground or the human body) will influence the radiation characteristics of antennas and thus their transmitting ranges.
	Wide band interference in urban areas may reach levels reducing signal to noise ratios and thus limiting transmission ranges.
	Insufficient shielding of personal computers may influence receivers and thus reduce transmission distances.

Specifications:

Transmission/Reception Frequency: 433.92 MHz
Transmission Range: up to 328 feet (100 m)
Power Supply: 2 "C" Batteries (alkaline batteries recommended)
Dimensions (W x H x D): 3.18 x 6.93 x 1.73 inch (81 x 176 x 44 mm)

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