Collocated Radios; Be Aware Of Seasonal Changes; Installing A Basic Remote Antenna - Banner Sure Cross DX80 Instruction Manual

4.3.3 Collocated Radios

When the radio network's master device is located too close to another radio device, communications between all devices is
interrupted. For this reason, always assign a unique Network ID to your wireless networks.
The Network ID (NID) is a unique identifier you assign to each wireless network to minimizes the chances of two collocated
networks interfering with each other. Assigning different NIDs to different networks improves collocation performance in
dense installations.
Do not install antennas within the minimum separation distance.
Antenna Minimum Separation Distance
900 MHz, 150 mW and 250 mW: 2 m (6 ft)
900 MHz, 1 Watt: 4.57 m (15 ft)
2.4 GHz, 65 mW: 0.3 m (1 ft)

4.3.4 Be Aware of Seasonal Changes

When conducting the initial Site Survey, the fewest possible missed packets for a given link is better. However, seasonal
changes may affect the signal strength and the total signal quality. Radios installed outside with 50% missed packets in the
winter months may have 80% or more missed packets in the summer when leaves and trees interfere with radio reception.
Figure 17. A good signal in winter doesn't always mean you will get the same signal strength the rest of the year.

4.4 Installing a Basic Remote Antenna

A remote antenna system is any antenna system where the antenna is not connected directly to the radio; coaxial cable
connects the antenna to the radio.
When installing a remote antenna system, always include a lightning arrestor or coaxial surge suppressor in the system.
Remote antenna systems installed without surge protection invalidate the warranty of the radio devices.
Surge suppressors should be properly grounded and mounted at ground level near where the cabling enters a building.
Install the surge suppressor indoors or inside a weatherproof enclosure to minimize corrosion or component deterioration.
For best results, mount the surge suppressor as close to the ground as possible to minimize the length of the ground
connection and use a single-point ground system to avoid creating ground loops.
Figure 18. During spring and summer, leaves may block more of the radio signal.
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Sure Cross DX80 Performance Wireless I/O Networks
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