8 options and accessories, 1 optional lancom wireless router antennas, 1 antenna diversity – Lancom Systems 3550 User Manual
Page 68: 8options and accessories
LANCOM 3550 Wireless
Chapter 8: Options and accessories
68
EN
8
Options and accessories
Your LANCOM Router base station has numerous extensibilities and the pos-
sibility to use a broad choice of LANCOM accessories. You find in this chapter
information about the available accessories and how to use them with your
base station.
The range of the base station can be increased by optional antennas of
the LANCOM Wireless Router series and can be adapted to special condi-
tions of environs.
With the LANCOM Public Spot Option option it is possible to extend the
LANCOM Router for additional billing and accounting functions in order
to upgrade it to a Wireless Public Spot.
8.1
Optional LANCOM Wireless Router antennas
To increase the range of the LANCOM Router base station or to adapt the base
station to special conditions of environs, you can connect LANCOM Wireless
Router antennas at the base station. An overview of suitable antennas can be
found on the LANCOM web site under
For help with calculating the correct antenna setup for external
LANCOM AirLancer Extender antennas or for antennas of other ven-
dors, please refer
When installing external antennas, ensure that you observe the stat-
utory limitations of the country in which the WLAN device is being
operated. To help with this, you can enter the transmitting power
minus the cable loss into the LANCOM configuration. These data ena-
ble LCOS to automatically calculate the correct transmitting power for
the selected country.
8.1.1
Antenna Diversity
The transmission of radio signals can suffer from significant signal losses
because of reflection and scatter, among other reasons. In some areas, the
interaction with the reflected radio waves can cause a drop in signal strength,
or even cause it to be cancelled out completely.
Transmission quality can be improved with so-called "diversity" methods. The
principle of diversity methods relies on the fact that a transmitted signal is
often received multiple times (generally twice). With appropriate processing,