Ya... that's the problem with unlicensed stuff... we've had to switch
many of our 900mhz towers to horizontal after having 100+ customers on
them... lucky for us, we only have to visit the customers we installed
external antennas (usually less than 10%), because of Trango's dual-pol
integrated antenna. And I'm not sure if you meant the h-pol antenna is
$2,200 or that would be your total cost for the switch, but h-pol
antennas are around $700 from Pac Wireless.
There is no way you can cause them enough interferance that they will
even notice you... like you said, they only have to reach 100ft from
their antenna... so for you to put out enough power to step on them
would be _very_ hard to do.
Travis
Microserv
Ray & Jean wrote:
Travis
Thanks for the input .that is a possible solution but not one that
could be implemented quickly or easily.It would require a new Hpol
omni about $2200 a climb to install it and a trip to about 100
customers home to change their eum antenna to h pol.This may be how it
gets resolved but really all we need to to do is have them turn the
power down on their equipment which only needs to reach 100 ft or the
area of their loading dock.or drop to a 5or 10 mhz channel that is not
on our freq of 918.4.It would be a simple problem to resolve if we
could get any cooperation from walmart.Any ideas on how how we could
create interference to their system to get their attention.I realize
this is not the proper way to resolve the problem but it might
encourge them to be better rf neighbors maybe.
Thanks
Ray Hill
----- Original Message ----- From: "Travis Johnson" <[EMAIL PROTECTED]>
To: "WISPA General List" <[email protected]>
Sent: Sunday, March 11, 2007 11:47 AM
Subject: Re: [WISPA] walmart rfid
Hi,
You may want to try changing polarity and see if that helps. Often going
from vertical to horizontal will make a big difference.
Travis
Microserv
Ray & Jean wrote:
Hello List We have an interference problem come up this week that we
have been unable to resolve.Hopefully someone here has some input on
how to resolve it.The problem is walmart installed a rfid scanning
system at there loading dock which instantly raised the noise floor
at our 900 mhz waverider access point by 20 db which killed about 30
of our weakest links.this equipment is operating across the whole
band so there is no way to change channels and get away from it.The
walmart store manager says its not his problem and refuses to call
the company that installed it .I called the company which is adt
security and they refuse to do anything unless walmart request
it.walmart home office will not return my calls and the regional
manager actually hung up on me and will not take calls from us now.We
have been very polite with them upto this point and gave them no
reason to act like jerks.Does anyone have any suggestions on how to
resolve this problem?
Thanks
Ray Hill
surfmore. net
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