Proxima ASA 7911 - Manual (Page 71)

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13. Performance Hints
This section provides the user with ideas for how to increase
performance with Proxim wireless products.
Microwave Ovens
Microwave ovens operate in the same frequency band as
RangeLAN2 products. Therefore, if you use a microwave within
range of RangeLAN2 equipment, you may notice network
performance degradation. However, both your microwave and
your RangeLAN2 network will continue to function.
Range
Every environment is unique with different obstacles, barriers,
materials, etc. and, therefore, it is difficult to determine the exact
range that will be achieved without testing. Proxim has devel-
oped some guidelines to estimate the range that users will see
when the RangeLAN2 7910 Serial Adapter is installed in their
facility, but there are no hard and fast specifications. Note that the
RangeLAN2 7911 Serial Adapter will have greater range.
Radio signals may reflect off of some obstacles or be absorbed by
others depending on their construction. For example, with two
RangeLAN2 radios, you may achieve up to 1000' in open space
outdoors where the two antennas are line of sight, meaning they
see each other with no obstacles. However, the same two units
will only achieve up to 500' of range when they have to travel
through the cubicles usually used in modern offices. If there are
office walls to penetrate, the signal range may decrease even
further to up to 300'.
If you are interested in antenna options, contact your Proxim Sales
Representative about antenna kits.