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DATA-LINC GROUP
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DDAA1000/SRM User Guide
PN 161-09981-002C
rev 8/04
DDAA1000/SRM and DD1000/SRM Placement Locations
Placement of your DDAA1000/DD1000 is likely to have a significant impact on its performance. In general, the rule of
thumb with the DDAA1000/DD1000 is that the higher the placement of the antenna, the better the communication. In
practice you should also place the radio itself away from computers, telephones, answering machines, and other similar
equipment. To improve the data link, Data-Linc Group offers directional and omni directional antennas with cable lengths
ranging from 10 to 200 feet.
When using an external antenna, placement of that antenna is critical to a solid data link. Other antennas in close
proximity are a potential source of interference. It is also possible that slight adjustments in antenna placement (as little
as 2 feet) will solve noise problems. In extreme cases, such as when the radio modem is located close to pager or
cellular telephone transmission towers, Data-Linc Group offers a band pass filter to reduce the out of band noise.