I need to set up a ptp link having 80 km distance between 2 edges with full LOS.
I’m planning to use offset satellite dishes (80cm) with feeders ~30dbi gain.
Will two Groove (5ghz) of 23dbm be enough for such distance?
Online calcualators reveal that link will be normally established however I’m not so sure for the attempt.
Has anyone experienced on such distances with 200mW (23dbm) devices? 
Theoretical signal level at site 1 -66
Link theoretical status unreliable
So what calculator did you use?
Better use dual chain and 1.5m dishes.
I used MT calculator and Ligowave Link calculator.
Nstreme will be used on 5gh-A.
After referencing to Groove specs, put respective values on fields and link characterized as reliable!
-64 signal level??? Too good to be true for such distance… 
Am I doing something wrong with the calculations?
802.11a: 23dBm @ 6Mbps
so you want to make a 80km link and have 2mbps?
You should learn a bit about wireless. 15dBm @ MCS7 look more normal. Do the math with 15dbm.
I have a link with groove and 85cm offsets dishes, -53 for 11km. Keep in mind this is in a ideal case.
Make sure:
1)Fresnel zone clearance
2)Possible signal ducting (on such distances can be very significant)
3)Signal fading due weather conditions
Most probably link will work, but no guarantee it will be stable.
Why use a device with 200mW (23dbm) for that distance when a 31dBm (1300mW) Metal 5SHPn is available?
I’m planning to use offset satellite dishes (80cm) with feeders ~30dbi gain.
With a offset dish’s you will have to allow a lot of clearance from the mast which may result in customizing the mounting bracket to allow the angle of the dish to obtain horizontal TX/RX , with prime focus the angle of the dish at most will only be a few degrees from vertical also there is screening available for prime focus.
Lets assume that I only need 2 mbps and use a mode (not n).
Will link established with signal level -64 as illustated in the screenshot?
Actully I need to comply with country regulation. 23dbm are already too much if antenna gain is also added. Of course metal 5SHPn is a last resort if transmitting power is not enough.
Yes, this is a very good point already come to my attention this angle issue and the horizontal alignment.
I’ve already established a link of 35km with groove feeder and satellite dishes with avg signal level -58 and data throughput ~70mbps (5ghz-N superchannel) using nstreme. (At this point I’m mainly intererested on low latency and that’s why I avoided nv2 - 70mbps are plenty of bandwith).
The challenge now is the 80km distance 
and I’m trying to gather the appropriate calculations before experimenting with such distance.
What I actually need to know is the correct usage of the calcualator as correctly commented by InoX.
Which values actually need to be filled in the calculator given product specs?
any update on this thread???
interested in knowing the performance of Groove at 80kms…
try using Radio Mobile for PtP planning. it is a very good tool.
hi,
i came across this topic today and was surpised to know about this configuration.
can you please post image of the setup? what antenna did you use in front of groove?