February 13, 2016, 6:25pm
I received my first Cambium ePMP GPS Synced AP and Force 180.
I'm doing some tests with only 1 SM (mine) and the AP pointed to my house.
With signal -60 I can't get MCS15 but only MCS10, so about 25Mbps downlink.
On uplink I'm getting MCS12 so about 15Mbps.
I tried different channels, totally clear channels using ACS, but results are the same on all channels.
Could it be an alignment issue on AP side?
February 13, 2016, 7:19pm
What is SNR and CINR on your link?
Please check whether Max DL/UL MCS is configured on AP/SM?
Also I would be really appreciate if you could provide Monitor -> Performance and Monitor -> Wireless pages screenshots after tests run.
February 13, 2016, 7:37pm
For checking alignment, you can use eAlign page. Ideally you want to have a balanced received signal between RF ch0 and ch1. Since your problem is with the DL, interference in the SM location should also be checked. ACS helps you to select a clear channel in the AP side, but to ensure your SM location has also low interference, run the Spectrum Analyzer in the SM side.
February 14, 2016, 1:14am
Thank you very much for your answer!
I discovered that mounting the SM too close to a balcony caused this issue.
I simply moved the Force 180 50cm away from it and, same signal, MCS14 :-D
In particular, there was a difference between ch0 and ch1 in that position.
I had a value oscillating from -64 to -74.
Now it's super stable at -64!
SNR was 37, now it's the same, but the speed is much better!