In my occasional series of FTA questions answered by other people, here’s one of my friends at FridgeFTA explaining how to pick up C-band signals using a Ku-band dish.
There are several challenges to overcome in this project. Ku-band dishes are offset, bouncing the collected signal back to the LNB at an angle. C-band dishes typically use a prime focus LNB suspended on the center of the reflected signal. More important is the sheer signal volume. The typical minimum C-band dish is about two meters wide, which will collect four times the signal of a one-meter Ku-band dish. (A one-meter diameter is just a touch larger than the typical 90cm Ku-band dish, but it’s the largest width protected by the FCC’s Over-the-Air Reception Devices rule that overrides local laws and neighborhood associations.)
Despite these problems, I’ve been able to pick up some stronger C-band signals using a setup very similar to the video above on my 1.2-meter offset dish. Since signal strength varies widely according to geography, it’s hard to say which C-band channels you’d get, but if you don’t mind experimenting, it’s fun to try!