Help with a 5.8 Link
Posted: Wed Oct 26, 2005 11:06 pm
My link is 9km and has a signal of -78 and it keeps bouncing.
RB500's with SR5 into 26dbi grids
Any ideas?
RB500's with SR5 into 26dbi grids
Any ideas?
Page 1 of 1
Posted: Wed Oct 26, 2005 11:39 pm
check pigtails
Posted: Wed Oct 26, 2005 11:41 pm
Quick update.
I killed Nstreme and the connection became stable BUT
My bridge can send data at 10Mbps but only recieves at about .5Mbps
Test shows the same from the other end, only reversed.
Maybe I need to re-align the bridge end?
I killed Nstreme and the connection became stable BUT
My bridge can send data at 10Mbps but only recieves at about .5Mbps
Test shows the same from the other end, only reversed.
Maybe I need to re-align the bridge end?
Posted: Thu Oct 27, 2005 4:29 pm
-78 seems very low for such a shrot link. Sound like you may not have good freznel zone clearance a one end. If you signal is not steady you may have movement with in the freznel zone, (cars, water, etc)
Posted: Thu Oct 27, 2005 5:48 pm
I found what my problem was.
2 bridges back to back.
1 5.8 Turbo at 5765
Other 5.8 at 5825.
I disabled turbo and pushed it to 5745 and both links are good.
If I wanted to run turbo on both, what kind of freq separation would I need?
This is what the link looked like.
(----------------5825--------------------)(-----5765 Turbo----)
My long link was getting interferance from the back lobe of the bridge and also from the remote end of the turbo shooting thru it.
It is now setup like this:
(----------------5825--------------------)(--------5745--------)
and is working good
2 bridges back to back.
1 5.8 Turbo at 5765
Other 5.8 at 5825.
I disabled turbo and pushed it to 5745 and both links are good.
If I wanted to run turbo on both, what kind of freq separation would I need?
This is what the link looked like.
(----------------5825--------------------)(-----5765 Turbo----)
My long link was getting interferance from the back lobe of the bridge and also from the remote end of the turbo shooting thru it.
It is now setup like this:
(----------------5825--------------------)(--------5745--------)
and is working good
Posted: Thu Oct 27, 2005 8:49 pm
As far as improving your -78 signal. Try a pair of th 28db solid dishes. I've tried the 26db grids and they seem more like 20db compared to the solid 28db dishes. They might be 26db if they were solid. 
Chuck
Chuck
Posted: Sun Oct 30, 2005 7:32 pm
Hi All,
I have a link on 8 Km and im using 26 Dbi Grids and CM9 card but my signal is -48 --50 dbm :-) with Nstream and it working verry god.
//Rickard
I have a link on 8 Km and im using 26 Dbi Grids and CM9 card but my signal is -48 --50 dbm :-) with Nstream and it working verry god.
//Rickard
Posted: Mon Oct 31, 2005 3:18 pm
I found what my problem was.
2 bridges back to back.
1 5.8 Turbo at 5765
Other 5.8 at 5825.
I disabled turbo and pushed it to 5745 and both links are good.
If I wanted to run turbo on both, what kind of freq separation would I need? About 40 MHz.
But remember, the freq you mention is the center freq,
eg : 5825 --> (from 5805 s/d 5845 MHz)
eg : 5765 --> (from 5745 s/d 5785 MHz)
So actually the freq doesn't overlap at all,
but in your actual experience you gettting bad performance,
maybe because other wireless network in your vicinity.
Try checking using spectrum analyzer, because
propertiary wll often doesn't come in MT scan
or frequency monitor.
Thx
//Budi
This is what the link looked like.
(----------------5825--------------------)(-----5765 Turbo----)
My long link was getting interferance from the back lobe of the bridge and also from the remote end of the turbo shooting thru it.
It is now setup like this:
(----------------5825--------------------)(--------5745--------)
and is working good