10
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RF interference
RF interference from home, office, and medical equipment is
a common source of frustration in wireless deployments from
the smallest home office to the largest multi-building campus.
The following table lists several common sources of RF
interference:
NOTE:
Most newer model microwave ovens have sufficient
shielding to negate possible RF interference.
Placing access points
Physical placement of an access point has a measurable effect
on who can and cannot access your wireless signal. The
following sections provide an overview of wireless access
point placement, signal strength, and signal direction in
common wireless deployment situations:
•
"Making hardware decisions"
on page 10
•
"Solutions to RF interference and barriers"
on page 11
TIP:
For the latest SonicPoint wireless deployment
information from switching recommendations to
site survey, see the Dell SonicWALLSonicPoint Deployment
Best Practices Guide at:
https://support.software.dell.com/
Making hardware
decisions
The first decision in hardware is the access point. While
access point technology (802.11a/b/g/n) is one factor in
determining your placement, based on distance served and
Interference Source
Possible RF
Interference
Band(s)
Affected
2.4GHz phones
Entire range
(hundreds of feet)
802.11b/g/n
Bluetooth devices
Within 30 feet
802.11b/g/n
Microwave oven
Within 10-20 feet
802.11b/g/n
Scientific and medical
equipment
Short distance, varies 802.11b/g/n
Off-network access
points
Entire range
All
RF reflective objects
Long-range wireless
bridging
All
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