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samsoft08
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Perfect 5G PtP connection , very bad connection at noon ..

Thu Aug 21, 2008 9:23 pm

ap-btidge :RB600+XR5+Omni
station-wds :RB333+XR5+24db flat
distance = 3.5km

Band= 5G-10Mhz
freq = almost all freq tested
signal strength = -57 dbm
CCQ = 100/100 %
signal to noise = 50 db
Ack timeout = 30us

the link is very good most of the day , except at noon ,(( disconnected , extensive data loss )) , almost everyday from 2:00 PM untill 5:00 or 6:00 PM ..
changing the freq. or rebooting the RB333 solve it for some minutes !!!
this happened to another PtP before , its gone , then it return back again ..
any idea why it happens ?
 
iam8up
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Thu Aug 21, 2008 11:10 pm

Do the radios stay associated? Does the signal strength or any other stats change during this time?
 
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samsoft08
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Thu Aug 21, 2008 11:40 pm

its disconnected and disapear from registry ..
about signal strength after disconnection i has not been monitored ..
 
jo2jo
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 6:49 am

try changing polarity? ie rotating antennas
 
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 10:56 am

Are those PtP mounted near a roof?
The problem might be a bad installation positioning. If they are too close to a floor (or a roof), in the hottest hours of the day you might experience disconnections.
Try to move them to a better position (like a pole).
 
jo2jo
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 11:10 am

what about power supply? i had some XR2s on which the noise floor would go to -113 during hot times. not at night though...changed power supply to more watts and 24v from 18v. no issues since.

I use xr2s and xr5s alot...i would try setting the tx-power to manual all @ 20 or 18. and see if that changes anything..if it helps, then its def. a power issue.
 
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samsoft08
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 2:09 pm

Are those PtP mounted near a roof?
The problem might be a bad installation positioning. If they are too close to a floor (or a roof),

the antenna's are 18m above the roof ( at least ) , some are 25m ..
in the hottest hours of the day you might experience disconnections.
yes this is what happens ..
i had some XR2s on which the noise floor would go to -113 during hot times
as I know if the noise floor -113 its better than if its -90 for example , so its a good value ..right ?
i would try setting the tx-power to manual all @ 20 or 18. and see if that changes anything
i'll try this , BTW all the POE is 24V , and the voltage reading is 22V - 23V ..
 
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samsoft08
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 2:39 pm

i guess its only the HEAT , the temp is 48 C ..... only RB333 affected with the temperature ...
any ideas to solve the heat problem ??
 
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mrz
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 2:53 pm

As far as I know RB333 overheating can be solved by upgrading BIOS to latest version and setting CPU frequency to 266Mhz
 
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samsoft08
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 3:01 pm

great .... how to set the freq to 266Mhz ???????
 
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mrz
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 3:05 pm

/system routerboard settings change-frequency frequency=266MHz
and reboot

or during startup enter bios and change it from there.
 
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samsoft08
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Fri Aug 22, 2008 3:38 pm

freq changed to 266 , I think it's solved .. thaaaaaaaaaaaaanx alot friends ...
 
esn.toolz
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Re: Perfect 5G PtP connection , very bad connection at noon ..

Tue Sep 02, 2008 6:03 am

How I know the temperature in a RB333 ???

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