Hi I have setup p2p link, signal strength is -70/-75
I have done AP BRidge and Station-Wds
with AP- wireless protocol any and wds- nv2 nstream
Currently the bandwidth test doesnt go beyond 1mb.
The distance is almost 15 kms. CCQ is almost 15-18%
What changes can improve CCQ and throughput ??
I usually start by setting up a straightforward ap/client link in standard 802.11 mode ( ap-bridge-> station or station-bridge) and making incremental changes till I get the desired result. Check for interference and obstructions.
in normal 802.11 the throughput is very low almost 256kbps.
The interference is also very low? How do i check though?
Sounds like an obstructed shot. Are you clear on at least Fresnel 1 ? Look at it in Radio mobile, or maybe Google Earth and see what’s in the way.
NV2 at 1slot and 18km may help a bit by controlling the lag on the link, but that’s not the real solution. You need Clear Fresnel.
the link details-pdf are attached here. If you can suggest something
link-detail.pdf (68.8 KB)
I’ve never used the Ligo Wave Calculator. I use Radio Mobile. In my experience the ‘up to 60% of F1’ is a dream. Anything into F1 is always a problem. So anything over a couple of meters tall in the middle of the shot - around 6.5 miles - is going to be into F1.
Attached is the Radio Mobile Plot. Only 19 meters to the ground at that point.
When I zoom that area in Radio Mobile I see trees.
I go for at least 100% clearance of F1 and preferably 100% of F2 as well - and that’s above the objects on the ground. So IMHO that’s the cause of your problem.
The link detail says you should have -49 using a 30dbi with 25dbm @12.6 miles but you say signal strength is -70, generally I have found ligowave calculator to be accurate but 20db would indicate a some errors with data entered ? Are you using the ligowave antenna listed and how about cable loss, have tried another frequency, is the alignment good on the antenna, did you try another radio card?
@Zod: you mean the if i increase height will it help?
I checked the Radio Mobile site , but its not what you shown? Is it any other tool or site?? Can I get it?
@ NRodie: In list i didnt find anything other than LigoPro , so i selected it. I am using all Mikrotik and custom antennas.
Card is currently dbii and miktorik, RB411ah at both end, 30dbi antennas.
I will check with other cards if i have xr5 or any else. But do you think increasing height will help ?
I disagree with n21roadie. I don’t think you have a Hardware problem. The issue is that you need more height to get F1 and preferably F2 above the Trees. More power is not the correct solution, although it may help for a short time. You need to raise each end roughly another 24 meters to make this a solid shot. Or add a Tower at ~30 meters tall at that high point in the middle and relay through it. Or possibly look at that Facility a tittle North of the high-spot to see if there’s something there that you can put a Relay on that would help clear the Fresnel.
Radio mobile is an executable that you run on your PC. It takes while to understand how to use it properly. I’ve been using it for ~8 years. It is an invaluable tool to determine the numbers you should see on a connection. I will not make a shot if Radio Mobile shows that it will not clear on AT LEAST Fresnel 1 above obstructions. It also gives you an idea of what a Shot should be like and then you can compare that to reality to know how good a connection really is.
The measurement in the shots I attached shows the LOS line (not the Fresnel) at 19.47m at the point where the Red cross-hairs are. Which it says is “1.2 (times) F1”. Therefor, at that point, F1 is 16.225m coming downward from the Sight Line. So an item 3.2 meters in height would be into F1. And if you believe the up to 60% of F1 theory that many want to follow, 60% of 16.225m = 9.375 + 3.2m (the clearance outside of F1). So, an obstruction of ~13 meters would be more that 60% infringement on F1. But like I said I don’t follow that - anything getting into F1 is bad in my experience. I’m guessing those trees are at least 12m (40’) tall from the looks of them in the aerial view, so that would put them well into F1. I’ve been doing this for about 10 years now and from my experience that is the probable cause of your poor numbers.
BTW the data that ALL of these tools uses does have a margin of error so Your mileage may vary. Tail Light warranty. No guarantees, you can’t blame me 
etc etc.
@Zod
I am not disagreeing with you, attached is screenshot of Ligowave calculator with the data supplied but there is something wrong? the results state it should be -55 with no issue with freznel zone but -70 is the actual,
from the map it appears the link is from “Nana Bazaar to Ode with Kunjaro in the middle” with building at both tx & rx so trees may not be a issue but the building could be, and as such regardless of what program you use for calculation it cannot factor in these, back to calculation data, is the antenna height @100 feet correct, 25dbm is too high for PTP @54Mhz more like 23dbm, cable loss if using integrated antenna maybe -2db or higher if long loss cable is used, RX Threshold prehaps -90, the antenna @30dbi is that for 4.9 to 6ghz or much less if say 5.4 to 5.7, freznel zone; with over 12 miles using good Binoculars you maybe to see obstances between tx and rx.
