08-16-2018 02:34 AM
Having a strange problem, we have two AirFiber 5X links, one is 1.6km and the other 350 meters. The 350 meter link in particular, must be run at close to full EIRP in order to achieve max throughputs.
I have tried tuning power down, but the modulation rate starts dropping, and so does the link speed. Other links I have tuned show a peak at the right power level, decreasing too at higher powers, as would be expected.
Can anyone shed some light on this?
See below - the link was briefly ran on licensed spectrum to remove interference/noise from the equation, but this is still observed. Modulation rate on the screenshot is 8X, but it drops to 4X every so often.
08-16-2018 09:06 AM
Your signal level is to high in your attached screen shot. Are you running the 30db antennas on a 350 meter link? Thats way overkill. Your going to have all sorts of alignment issues on that short of path. The larger antennas are much harder to properly align on short links. You might be sitting on a sidelobe and not know it due to the close proximity of the antennas.
08-16-2018 11:41 PM
08-18-2018 05:52 AM
These are links that carry 200 to 300 Mbps of traffic most of the time, so we cannot fool around.
08-18-2018 09:19 AM - edited 08-18-2018 09:20 AM
We have tested all Mikrotik options and they suffer from noise a lot more than Ubiquiti. We now run Ubiquiti on all PtP and sectors, and SXTs as CPE. We could not get any form of stable or high throughput on Mikrotik 802.11 or NV2 etc.
Besides 60GHz is licensed in the area we operate.
08-18-2018 01:11 PM - edited 08-18-2018 01:14 PM
This Device delivers 1 GBit easily
in the most parts of the world 60Ghz is free to Use
08-18-2018 02:11 PM
I would expect issues with modulation at this distance and EIRP, but it should get better as you turn the power down.
Would you happen to have some installation pictures?
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