APPENDIX D " S-UHF Specifications and Antennas

32 or fewer wireless stations in this area

60 wireless stations maxi- mum in overlap area (two frequencies)

100 wireless stations maximum in overlap area (four frequencies)

Figure D-3

Increased System Throughput

Frequency and Separation Guidelines

When using overlapping access points, you must provide minimum physical separation between access point antennas. The recommended minimum frequency separation between frequencies used within an installation is 200 KHz, with separation of 1 MHz preferred.

In some cases, you may need to use separations as small as 40 KHz (for 20 KHz spacings) or 50 KHz (for 25 KHz spacings) because of regulatory limitations. In this case, the physical separation between access point antennas must be increased. The recommended minimum physical separation between access points is 30 meters (100 feet).

Absolute minimum separations are based on frequency separation, as indicated in the following chart.

Frequency Separation

Absolute Minimum

50 KHz

100 feet (30 meters)

³ 200 KHz

20 feet (7 meters)

D-106710 Access Point User’s Guide

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Intermec 6710 manual Frequency and Separation Guidelines, Frequency Separation Absolute Minimum