Sydney Wireless

March 23, 2002

Passive Repeaters

Filed under: Network — evilbunny @ 6:43 pm

Thought this was to good to leave it hidden in the forums… has been mentioned before by the infamous Bob Cringley, however for a local example read below…

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I thought I would mention this as nobody has disussed this topic.

I manage a site at glenfield where they have two aironet 350′s 800M apart linked by a passive repeater.

The repeater consists of two Gridpacks (very similar to a galaxy ant.) back to back joined by a small piece of coax, no power required.

The two sites had a large hill between them so the engineer proposing the link suggested the use of the passive repeater, he claimed a 6DB loss so this has to be taken into account when calculating path loss.

It works very well & has been in for about 12Months. Large metal objects such as Bridges, buildings, water towers or radio towers can also be used as passive reflectors, even aircraft have been used but they don’t hang around long enough to be of any use.

So when looking at putting in a link, think outside the square, just because you do not have LOS,it does not mean it is impossible to achieve.

Cheers Glenn Weston.

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