Yeah, that sounds like multipath. I've seen that a few times.
Your signal level is actually much too high.
Try two things to test my theory.
Turn the antenna backward. That should cut 15 to 20dB of signal off and get
you down into the high 60 to mid 70 rssi range. Much more reasonable.
Try cross polarizing this cpe. If the tower is vertical, put the cpe hpol.
Also, what's the radio? (sl2 isn't one I've heard of, cpq or cpe I know of)
How about the AP? I've got some very strange things happening with SB ap's
and Inscape Data or the new Tranzeo CPQ radios. They will just stop talking
to each other. In fact the cpe won't even see the ap until the *ap* is
rebooted! It's the dangdest thing. It's almost like the cpe is being put
on a mac filter list and the ap completely ignores the cpe. No cpe mac
filter being used though. I've had this happen on different networks with
different towns, different upstreams, different antennas, different cpe etc.
The old CPE200 units didn't do this. Just the new cpq and inscape data cpe
radios.
laters,
marlon
----- Original Message -----
From: "Jim Stout" <[EMAIL PROTECTED]>
To: "WISPA General List" <[email protected]>
Sent: Wednesday, April 11, 2007 4:42 AM
Subject: [WISPA] Power Lines in the LOS path
I hate to ask this question, but I'm at my wit's end with this one.
I recently installed a new customer (2.4 GHz) with a clear LOS to my tower.
The distance is less than a mile and I get -56 dBm of signal strength. I've
run a spectrum analyzer and it's dead silent when the radio's off.. All
sounds great! A real simple install, but the radio intermittently locks up,
fails to associate and most recently, simply fails to work for more then
10 - 30 seconds at a time following a POR. I've replaced radio (Tranzeo
SL2) and gone to the latest version of firmware. I even contacted Tranzeo
Tech Support and follwed their recommendations for timing settings. The
only difference between this client and all the others on my tower is that
there is a power line in the LOS path. Has anyone else found this to be a
problem? It's almost like an invisible concrete wall is between the AP and
the site.
Thanks, Jim....
Jim Stout
LTO Communications, LLC
15701 Henry Andrews Dr
Pleasant Hill, MO 64080
(816) 305-1076 - Mobile
(816) 497-0033 - Pager
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