Cisco Cisco Aironet 1400 Wireless Bridge Guide De Montage

Weather seal all external coaxial connectors by wrapping them with the sealant tape provided in the 
installation kit. For more information, see the 

Do not weatherproof or permanently secure all connections until after final antenna alignment. 

For long outside cable runs, you must ground the shields of the RG6 coaxial cables to the tower at regular 
intervals. This precaution helps protect the bridge and the power injector from lightning damage. The 
recommended spacing between grounds is 100 ft (30 m). In areas of especially high lightning risk, space 
the grounds even closer. Make sure each grounding block makes good electrical (metal-to-metal) contact 
with the tower or a metal surface.

Make sure to comply with the tower owner's policies and local codes. Drilling into tower structures or 
other alterations can affect the tower's long-term integrity.

In lightning environments, optional lightning arrestors (or protectors) should be installed for each coax 
cable at the building entrance. Mount the lightning arrestors at the building entrance and ground them in 
accordance with the manufacturer’s instructions. In very high lightning environments where arrestors 
with replaceable gas tubes are desired, use Huber+Suhner lightning arrestors 
(part number 3401.99.0022). In less severe lightning environments where lower cost, non-replaceable 
gas tube protectors are desired, NexTek lightning arrestors (PTC-C030) or equivalent can be used. For 
additional information on the lightning arrestors, see the websites of NexTek and Huber+Suhner.

To route and connect cables, follow these steps:

For unassembled coax cables:

Unspool two 75-ohm cables, laying them out straight without kinks. Do not cut the cables until you 
know the required length between the bridge and the first grounding block and between each of the 
remaining grounding blocks.

Add an extra cable length for service loops at both ends.

Install F-connectors on the cable ends before climbing the tower.

Tie a rope near the end of two cables, and secure it using black electrical tape, making sure the 
connectors do not support any cable weight.

From the tower, use the rope to pull the cables up from the ground, making sure they pass along a tower 
member where they can be securely fastened. 

Connect the cables to the bridge connectors and install service loops (also called a drip loop). The cables 
should slope downward so that moisture runs away from the connectors during rainstorms.