User Manual Part 4
Administration Tab
SpectraGuard® Enterprise User Guide
210
RF Propagation
Default RF Propagation Settings contains the following options:
Default Antenna Gain Values: Specify the default sensor, AP, and Client antenna gain values. Antenna gain
is a characteristic of an antenna used for transmitting or receiving signal, defined as gain in power when
signal is received (or transmitted) using the antenna.
Sensor Antenna Gain (dB): Specifies the gain of antenna attached to the sensor. (Default: 2.3 dB)
AP Antenna Gain (dB): Specifies the gain of antenna attached to the AP. (Default: 2.3 dB)
Client Antenna Gain (dB): Specifies the gain of antenna attached to the Client. (Default: 0 dBm)
Note: If better antennas are used, you should increase the gain.
Transmitter Losses: Select the transmitter signal loss value suited to your environment.
If your environment has metal or concrete walls, select a higher signal value.
If your environment has large spaces where the signal can propagate without much obstruction,
select a lower signal loss value
When a device transmits, some loss in power occurs due to antenna connectors, electromagnetic, and environmental
factors. This loss might be different in different frequency bands. You can also specify the approximate loss in each
band.
Loss at Source for 802.11a Transmitter (dB): (Default: 10 dB)
Loss at Source for 802.11b/g Transmitter (dB): (Default: 10 dB)
Signal Decay Values: Signal propagation depends heavily on environment. The obstacles present in
environment might impede signal propagation, limiting its range. It is very difficult to accurately model
signal propagation in all kinds of environment, but by fine-tuning the following four constants, you can
more or less characterize your environment for signal propagation.