With respect to changing channels on your base stn, you might want to consider that the channel designations are 5 MHz apart, and the bandwidth of the transmission is more like 25 MHz. So, the standard US channels for WiFi in the 2 GHz band are 1, 6, and 11. If you go to 5, you are still going to pick up some problems from users on ch 1.
You might also look into 802.11a. 11g still runs in the very heavily congested 2 GHz band, and there are a total of 3 channels available. There are something like 37 in the 5 GHz band where 11a operates, and not as many other devices (e.g., bluetooth, microwaves). The wall penetration may not be as good, however.
You might also look into 802.11a. 11g still runs in the very heavily congested 2 GHz band, and there are a total of 3 channels available. There are something like 37 in the 5 GHz band where 11a operates, and not as many other devices (e.g., bluetooth, microwaves). The wall penetration may not be as good, however.