nRAY 60G minimum distance

8an · Fri Mar 12, 2021 3:12 pm

Hi,
有最低recommen吗ded distance for nRay 60G PtP links? We installed one at just 200m and it won't hold maximum TX rate at any frequency, even though RSSI is always around -50. At 58320 it won't even stay connected. 62640 seems best, but TX rate still rarely goes above 1540 and when it does, there's always 10-20% error rate. Could it be interference? Or faulty unit? But the strange thing is that the link acts the same in both directions, for example at the moment it's like this:

connected: yes frequency: 60480 remote-address: 08:55:31:29:7D:AA tx-mcs: 2 tx-phy-rate: 770.0Mbps signal: 20 rssi: -49 tx-sector: 62 tx-sector-info: right 0.8 degrees, up 0.6 degrees distance: 208.72m tx-packet-error-rate: 10%

connected: yes frequency: 60480 remote-address: 08:55:31:2D:0F:5E tx-mcs: 2 tx-phy-rate: 770.0Mbps signal: 20 rssi: -51 tx-sector: 57 tx-sector-info: left 0.2 degrees, up 0.6 degrees distance: 212.29m tx-packet-error-rate: 12%

velk1001 · Fri Mar 12, 2021 5:04 pm

The units are not correctly aligned to each other, used the signal strength instead of the RSSI to align them.

When you get them aligned you might see TX-sector 31 which is the center.

good luck

Paul

8an · Fri Mar 12, 2021 5:23 pm

TX sectors are moving all over the place, if I force them to 31, RSSI is even better at -48, but the link performs worse:

connected: yes frequency: 60480 remote-address: 08:55:31:2D:0F:5E tx-mcs: 1 tx-phy-rate: 385.0Mbps signal: 20 rssi: -48 tx-sector: 31 tx-sector-info: center distance: 208.75m tx-packet-error-rate: 73%

connected: yes frequency: 60480 remote-address: 08:55:31:29:7D:AA tx-mcs: 1 tx-phy-rate: 385.0Mbps signal: 20 rssi: -48 tx-sector: 31 tx-sector-info: center distance: 208.7m tx-packet-error-rate: 29%

8an · Fri Mar 12, 2021 6:26 pm

This is the best configuration I managed to find, frequency 62640 with fixed TX sector. Acceptable error rate, but still not at full speed:

connected: yes frequency: 62640 remote-address: 08:55:31:2D:0F:5E tx-mcs: 7 tx-phy-rate: 1925.0Mbps signal: 60 rssi: -50 tx-sector: 31 tx-sector-info: center distance: 208.73m tx-packet-error-rate: 4%

connected: yes frequency: 62640 remote-address: 08:55:31:29:7D:AA tx-mcs: 6 tx-phy-rate: 1540.0Mbps signal: 60 rssi: -50 tx-sector: 31 tx-sector-info: center distance: 208.75m tx-packet-error-rate: 0%

velk1001 · Fri Mar 12, 2021 7:26 pm

Have you got total line of sight between the two dishes? (Trees between are a no no)

Taken your time adjusting the mount and make sure the pole you are using is totally vertical( i had this problem), if its not straight you'll loose signal.

Once you get the best signal try switching the auto beamforming back on

velk1001 · Fri Mar 12, 2021 8:08 pm

Make sure you use some self amalgamation tape on the ethernet connector gland or it might let water in ( bad design)

8an · Wed Mar 24, 2021 11:02 pm

谢谢你的建议,不幸的是什么helped, we had to replace the nRAYs on both sides with LHG. Now the link is stable at maximum rate without packetloss. It was likely a faulty unit, although we don't now which one, both directions seemed roughly the same.

velk1001 · Thu Mar 25, 2021 1:42 pm

How fast did they transfer the data ?

8an · Thu Mar 25, 2021 1:55 pm

TX rate on nRAY fluctuated between 385 a 1540 Mbit, LHG is stable at 2310 Mbit.

velk1001 · Thu Mar 25, 2021 7:59 pm

It might of just been the size of the dish being bigger that has helped with the signal?

ubikrotik · Wed Apr 14, 2021 6:03 am

same problem here. all lhg are runing perfectly, but nray even at short distance are junk.

Wed Apr 14, 2021 10:34 am

It is possible that this is a warranty case, please contact the distributor for a replacement unit and test if that one is better.

modsx · Wed Apr 14, 2021 11:57 pm

Make sure you use some self amalgamation tape on the ethernet connector gland or it might let water in ( bad design)

Sounds like a sofa expert opinion. Have you looked at the design of this connection yourself? Everything is fine with him. I think someone did the wrong installation (the cable was placed so that water flowed through the antenna port, or the seal was not tightened), posted a picture on the forum and now everyone is going crazy.

modsx · Thu Apr 15, 2021 12:02 am

same problem here. all lhg are runing perfectly, but nray even at short distance are junk.

Thanks for the information (the fact that nRAY has problems with the quality of production, I have already concluded and shown in the pictures (without a detailed description). Even the fingerprints on the lens were visible there). I am currently waiting for some to arrive, preferably someone to share ideas on how effective it is to check if nRAY has problems and most importantly how to prove it to the distributor.

velk1001 · Thu Apr 15, 2021 10:24 am

If you have a look at (third from bottem)
viewtopic.php?f=3&t=161445

You see the damage water can do, i know this with years of putting antennas up!

If you look at the pictures supplied by Mikrotik the seal is not level with the outside of the plastic gland, this will allow water to sit and it will get in.

nRAY 60G minimum distance

nRAY 60G minimum distance

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