Best Config for R52hn

deal all member…
i have a problem to config my ptp using rb800+R52Hn and using ubiquity rocketdisk antena.
maybe anyone can help me to share the config for this MiMo device?
distance 8km but only got 50M duplex…

please help me…

thankyou before..

up…help please

what configuration you have?
How do you test the speed?