I can tell you from experience, mounting it at 6 inches is not a good idea. We did that once, in a rush job, when the climbers were there and mounting hardware was not. Definate holes in coverage were identified after the fact.

The answer of how far from the tower, is also a factor of how big your tower is, and of what kind.

I recommend 18"-24". As for Rick's suggestion of 36", never tried it, so don't know, but I see no reason not to take his word for it.

Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband


----- Original Message ----- From: "Rick Smith" <[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Thursday, February 16, 2006 7:47 PM
Subject: Re: [WISPA] omni tower separation



actually, at 900 mhz, 36" is preferred.

On one tower, with trango, using an OD9-11 (11 dbi vert omni), I saw 8-10 db improvements in my customer connections that were NLOS when I moved the antenna out from 24" to 36"....


Marlon K. Schafer wrote:

I've always been taught that 18" is the minimum.
marlon

    ----- Original Message -----
    *From:* Kurt Fankhauser <mailto:[EMAIL PROTECTED]>
    *To:* wireless@wispa.org <mailto:wireless@wispa.org>
    *Sent:* Thursday, February 16, 2006 10:12 AM
    *Subject:* [WISPA] omni tower separation

    Is 6 inches enough separation with a 9db omni from a 25g tower?,
    I’ve done it with 12 before and I had no problems, just wondering
    what 6 would do.

    Kurt Fankhauser

    WAVELINC

    114 S. Walnut St.

    Bucyrus, OH 44820

    419-562-6405

    www.wavelinc.com <http://www.wavelinc.com>

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