I am about to start a project for wireless internet at 2.5 GHz. The DS will be in the MMDS band, 2600 MHz. We are aklready providing digital wireless cable TV in that band. The CPE Upstream is 2170 to 2182. I have to use some trunking radios to get the upstream back from some remote locations, as these go through many hops. Trunking is at 8 GHz. One concern I have is the use of AGC on these trunking radios, to ensure that the upstream levels to the CMTS at the headend are reasonably constant. Rain can attenuate the received levels from the 8 GHz trunking radios by as much as 10dB over a 20 mile path. Do you have any experience with AGC long loop control on wireless links.