I’ve got a couple of questions if somebody wouldn’t mind helping me out.
We did a wireless install this weekend and I’m receiving horrible speeds out of these link.
I must say that it is the first time I am working with these R52Hn card and was hoping for good throughput.
Please bare with me as I am unfortunately very new to this
There is clear LoS from the highsite to the bridge, and from the bridge to the client.
Questions:
\
What would happen if the different polarized antennas are plugged in as follows: HighSite - chain0 = Hor, chain1 = vert || Bridge - chain0 = vert, chain1 = Hor
The reason for the dual grid setup on the Bridge to the client is that we plan to expand the client’s link at a later stage. Can the setup (2 to 1 grid, where just the 1 chain is active) work as explained here?
Surely there must be something wrong with my configuration because of the bad speeds / throughput? (Actual throughput is around 100KB/s)
Setup is as follows:
HighSite - RB800 - ROS v5.5
2 x 24dBi Grids (1 x Hor, 1 x Vert) on 1 x R52Hn pointed towards Bridge
Very nice link. Can’t see a major problem. Perhaps try and use chain1 at client instead of chain0 and see what happens. Also i would probably not use nstream on such a short link, but that, will probably only influence your pings. Also R53n cards would probably be better. Again distance is very short for your kind of setup. Stronger is not always better. If your TX is to strong you desensitize your RX. Best signal is around 65 db any thing lower has no advantage. Also do a speed test from bridge RB to client RB and bridge RB to High Site RB to see on which side the actual problem is. Also just want to confirm what ports u use in your bridge, on the bridge RB.
Perhaps try and use chain1 at client instead of chain0 and see what happens
I’ve tried but it doesn’t pick anything up
Can I use 802.11n with just one antenna connected to the R52Hn? (On the client - bridge connection)
Stronger is not always better. If your TX is to strong you desensitize your RX. Best signal is around 65 db any thing lower has no advantage.
As soon as we iron out the kinks, I will ‘tune’ the signal to around 65 db - I always try to get all the links to around 60-70db
Also do a speed test from bridge RB to client RB and bridge RB to High Site RB to see on which side the actual problem is.
Both of the links are slow, but the biggest slowdown is the Client connect from the Bridge. (1MB/s from HighSite to Bridge, 100KB/s from Bridge to Client)
Going the 802.11n route with 2 x Grids I was under the impression that I would get better speeds than with 802.11a that I currently use.
The other links on the RB800 (HighSite) get around 5MB/s per client running on 802.11a Turbo.
Also just want to confirm what ports u use in your bridge, on the bridge RB.
Not entirely sure what you are referring to here?
Another thing I’m worried about is the Transmit Signal Strength of Channel 1 on the HighSite connection. Why would it be -92?
Can I use 802.11n with just one antenna connected to the R52Hn? (On the client - bridge connection)
Jip, will work just fine. Also set the channel width to 20 Mhz and test.
Both of the links are slow,
This is not slow, it is dead. I would seriously look into interference as a cause, at the bridge side, especially since both links is slow, maybe even consider switch to the 2,4 Ghz range. Have got a link with similar setup, running around 10 M/s full duplex RB439 to RB333, before the RB333 max out at 100%
x 24dBi Grids (1 x Hor, 1 x Vert) on 1 x R52Hn pointed towards Client
This signal is also very low, should also be around -60 or at least close to one from high site if you have got line of sight. Definitely nothing in Franzen?
Doing a lot of poking, mabe will help you to poke at the right thing.
I’m heading back to the HighSite, Bridge & Client tomorrow.
Do the two antennas need to be opposite polarization to setup a 300Mbps connection using the R52Hn and two antennas?
Also set the channel width to 20 Mhz and test.
I did that now and I see that it’s running on 802.11n now, thanks!
The client connection I also want to get up to 150Mbps so I will need to use the extended channel, correct? (Which will now not work seeing I’m on 20MHz?)
I’m also going to change the polarization on the Client’s antenna to see if I can’t get the Signal Strength up.
Should not switch. Maybe if you fix your aerial polarity’s. Also would suggest you try take a RB SXT with you if you have got access to one. Would work great in the place of client and repeater and easy to test with.
Checked the polarization and it turns out we did everything correctly the first time around.
Rechecked the connections, all fine
Scanned from Bridge to Highsite (after aligning it) with the client connection, same results.
The noise floor for both the client and the highsite connections are -112db
Only way to see interference problems is with a spectrum analyzer. Most of the newer radio cards have the option to run a spectrum scanner on them from the terminal window. Will give you a basic idea of usage on a specific frequency.
At the bottom you will see the color legend. Red is bad, black is good. This gives you a general idea, but unfortunately spectrum analyzer will allow you to see exactly what is going on, from this i would think you have problems. This way you move your frequency to frequency closes to black and have a look see, but it is bit of a hit and see scenario.
black and blue means this frequency is less occupied than the brighter colors. choose your frequency in the area where it shows black, and you will have less interference. avoid the red areas, they are overcrowded.
Hello There! I have done a PtP wireless links with router board RB433 with two wlan cards R52HN (dual chain). I have done ap-bridge wireless configuration mode on RB433 board and station bridge on the another sites. All the other station sites are at different directions. So i decided to utilize the dual chain R52HN radio cards with single chain 24dBi grid antennas for different location based station directions that is four different directions with chain0 connectors to two directions and chain1 connectors to another two station directions. For chain0 link connectivity at station end i have used Mikrotik groove52Hpn having single chain0 and link connected good with Rx/Tx signal strength -65/-63dBm. For chain1 connectivity i am using Mikrotik dual chain DISC Lite 5 with activating both chain0 and chain1 on this station end, as there is no radio with single chain1. But chain1 is not making link from AP base site to this dual chain DISC Lite 5 station. It must link at least with chain1 on this dual chain DISC Lite 5 station. Why this is so it must detect the station and get connected? Any link connectivity technical support will be appreciated from Mikrotik Wireless Network Expert here. Thanking you.
I would seriously look into interference as a cause, at the bridge side, especially since both links is slow, maybe even consider switch to the 2,4 Ghz range. Have got a link with similar setup, running around 10 M/s full duplex RB439 to RB333, before the RB333 max out at 100%
