LANCOM 3850 UMTS
Chapter 8: Options and accessories
75
EN
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,
these signals can be re-combined into a single signal. The most common
methods are space diversity and polarization diversity.
LANCOM Systems supplies a variety of polarization-diversity antennas as
accessories for LANCOM Wireless Router. These models enable two orthogo-
nally polarized signals to be received with a single antenna. Further informa-
tion about this technique is available in our "Polarization Diversity" techpaper.
Polarization diversity antennas from LANCOM Systems:
AirLancer Extender O-D80g (2.4 GHz band ), item no. 61221
AirLancer Extender O-D60a (5 GHz band ), item no. 61222
8.1.2
Installation of AirLancer Extender antennas
For installation of an optional AirLancer antenna turn off the LANCOM
Wireless Router by pulling out the power supply cable of the device. Remove
now carefully the two diversity antennas on the back by screwing them out.
Connect the AirLancer antennas to the antenna connector with the inscription
’Antenna Main’.
8.2
LANCOM Public Spot Option
Wireless public spots are publicly accessible points, at which users with their
own mobile computers can dial wirelessly into a network, usually into the
Internet.
The Wireless LAN technology is ideally suitable to offer wireless Internet ser-
vices to the public at places such as airports, hotels, stations, restaurants or
cafés, so-called Public Hot Spots. The LANCOM Public Spot Option is intended
for operators of public wireless networks, and unveils additional functions for
authentication and billing of public Internet services for the LANCOM Router
base station, thus enabling a simple set-up and maintenance of public hot
spots.
Reset
12 V DC
Antenna Aux
Antenna Main
ETH2
ETH1
USB
Config (COM)
’Antenna Main’ connector for AirLancer antenna
