This is more for the Cambium staff, but hoping the answer will benefit us all.
Looking at the ePMP sector antenna specs, it lists a 30db front-to-back ratio. I have seen no specs for needed SNR for MCS 8/9 for the ePMP 3000, but I am suspecting SNR values will be close to the current ePMP 1000/2000 and inline with current AC gear SNR levels.
With that said, and we use current SNR levels for most AC equipment, using a 20Mhz channel, a SNR of 29db is needed to reach MCS8 and a SNR of 31db to reach MCS 9. Increase channel width to 40Mhz and a SNR of 32db is needed to reach MCS8 and a SNR of 34db to reach MCS 9.
With a standard radio tower installation (Rohn 25/45/55 type tower), using freq resuse, how are we to ever reach MCS 8/9 modulation levels for download using the ePMP 3000 sector antenna? I understand we will need near perfect conditions to reach MCS 9, but I would hate for the antenna to be the one factor holding us back from MCS 8/9, when all other conditions are met.
The ePMP 2000 sector sports a 35db F/B. Mimosa just released a 43db F/B antenna (seems they learned a high F/B for AC use is extremely important). Many guys who have used the RF Element horns rave about how well the horn cuts noise down, and allow higher modulation rates in freq reuse deployments due to their high F/B ratios.
Just curious of Cambiums thoughts on these concerns.