Recently i had deployed a small wireless network. It's made with RB433 AP's, RB411 as clients, R52H cards, GD5W-25-NF grid antennas. In the bench, calculations show my links at 20 miles with an RSL of -68dBm. In the practice all of my links show RSL of -78dBm. That's 10dBm less than the calculated. After checking installation deploys, software configurations and hardware components i can't explain why my RX signal is 10dBm less than the expected. Searching in this forum i found many post about R52H issues with output power and received signal.
I just wanted to know is there is a way to find out if my R52H cards are working with diversity.
If someone has any other suggestion i gladly take the advice.