Cisco 1601 - Router - EN Hardware Installation Manual page 200

Access Point High-Speed WAN Interface Cards
Although it is not absolutely necessary, for best RF performance, orient the antennas as shown in
Note
Figure
Figure 134
1
For more information about connecting the AIR-ANT4941 to the HWIC-AP-G, see the
2.4-Ghz Articulated Dipole Antenna (AIR-ANT4941)
For more information about connecting the AIR-ANTM2050D-R to the HWIC-AP-AG, see the
Cisco Multiband Swivel-Mount Dipole Antenna (AIR-ANTM2050D-R)
Wall-Mount and Ceiling-Mount Antennas and Cabling
Depending on the wireless environment, wall-mounted or ceiling-mounted antennas may be preferred
for optimum radio coverage. If the length of the coaxial antenna cable is insufficient to cover the distance
between the access point HWIC and the location of the installed antenna, you can use low-loss RP-TNC
extension cables between the access point HWIC and the antenna cable.
RF energy is carried between the antennas and the radio equipment through a coaxial cable. An antenna
cable introduces signal loss in the antenna system for both the transmitter and the receiver. Although the
cable run can be 100 feet (30 m) or more from the access point HWIC to antenna locations, the longer
the cable run, the greater the signal loss. To reduce signal loss, minimize the cable length and use only
low-loss or ultra low-loss antenna cables to connect radio devices to antennas.
Table 42
available from Cisco. For more information about antenna cables, see the
OL-12854-01
8
134.
Swivel-Mount Dipole Antenna Positions for Use with Desktop Router
HWIC
a/g
AP
Swivel-mount dipole antennas
lists transmission loss information about low-loss and ultra-low-loss extension coaxial cables
1
ACT ACT
b/g
a
RP
LNK LNK
a/g
TNC
document.
Access Point High-Speed WAN Interface Cards
Cisco Aironet
document.
Antenna Cabling document.