Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Determining Line of Sight

Hello,

I'm faced with installing a WLAN between two buildings. They're about 2 KM a part. I think I have line of sight between the two, but is there any way to be absolutely sure. I'm wondering if I purchased one of those little laser thingies if that'd do it.

Suggestions?

Dave

1 REPLY
Cisco Employee

Re: Determining Line of Sight

Hi Dave

a) There is visual line of sight and another is RF line of sight . You will need

both .

b) For visual line of sight if you can see remote antenna that is fine . Make sure there is no tree or building in between

c) We need to take freznel zone into consideration . use bridge antenna calculator . Suggestion is do not use long coax cable between antenna and

bridge

http://www.cisco.com/warp/customer/102/us-calc.xls

http://www.cisco.com/warp/customer/102/wlan/rf-problems.shtml

mainly watch the middle led which is STATUS LED . When two antenna

sees each other it will go SOLID ....otherwise it will BLINK .

Nilesh

180
Views
5
Helpful
1
Replies