We did some testing with a new client radio today, the Mikrotik DynaDish 5 from the St Petersburg Clearwater airport.  At 8′ off the ground we had a -69dBm signal from the antennas  22 km (13.75 Mi) away in Tampa.  A speed test showed a 22 Mbit/s throughput.

Once installed higher on the roof the signal should improve to -62 to -65 dBm and provide a great link into the HamWAN.