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Re: [TowerTalk] Wireless ISP on Ham tower

To: Robert Hess <>,
Subject: Re: [TowerTalk] Wireless ISP on Ham tower
From: Hector Garcia XE2K <>
Date: Tue, 30 May 2006 21:16:05 -0700 (PDT)
List-post: <>

Some equipment is very sensitive to the RFI,  i
remember one customer that was a problem to solve, he
was  very close to a AM tower, the cisco equipment we
use with him  was unable to resist the 910 khz freq
from the broadcast,  the same Grid 24 dbs antenna 
grounding  and all the possibles things to solve the
weird problem,  the cisco bridge was very suceptible ,
i switch to a Breezcom radio that use a metal case 
and was the only solution,  the cisco use a plastic 
at my station i use the 2.4 ghz cisco and  in low
bands the radio lost the connection,  at the moment
i'm usign a  Motorola Canopy  5.7 ghz with a reflector
, this antena is at the front of the other towers and 
have no problem.

most of the problems in this equipments is the UTP
cable  that "receive" the RFI 

a lot of people use legal power at HF band with out
cut the connection in the 2.4 ghz,  other find the
solution for his personal connection  or live with it

if you will rent the space for W ISP and you reset or
reboot the equipment when operate can be a problem.

the W isp use 900mhz 2.4, 5.2, 5.7-5.8 GHz  some old
1.2 Ghz   and the public start using 4.9 GHz 

test  and see what happend 
good luck

--- Robert Hess <> wrote:

> Anyone out there have a wireless ISP operating from
> your tower?  If so, any interference to your
> equipment
> from the ISP or from the ISP to your equipment?  900
> MHz, 2.4 or 5.8 GHz?  Do you run legal limit?  HF or
> VHF operating on the tower with the ISP?
> Bob
> W1RH
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Hector Garcia XE2K / XF1K
Mexicali B.C  DM22fp

TowerTalk mailing list

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