I peak my dishes every few years using the SF-100 device from SD. What I've found is that the skew is not something easily measured like the azimuth or elevation. So the trick is make sure the mast is absolutely plumb and then set the skew using the guide settings and the numbers imprinted on the backside of the dish. Then forget about it.
Then you can peak the dish and get pretty even results throughout the channels. I use the SF-100 on the recommended channel of 299 and do side-to-side, up-down, then once more side-to-side. A week ago, I got 96 on a 75E and 93 on a 60 dish. Good ebno #'s on all the channels I tried.
You read of all sorts of complaints of pixelization on the new 630's. I noticed this a bit on mine but once I peaked the dish, it's been rock solid. I suspect that's probably a big cause of the complaints. Years of heat cycles on your dish mounts can cause the dish to droop ever so slightly. Peaking a dish is a good maintenance practice.
Then you can peak the dish and get pretty even results throughout the channels. I use the SF-100 on the recommended channel of 299 and do side-to-side, up-down, then once more side-to-side. A week ago, I got 96 on a 75E and 93 on a 60 dish. Good ebno #'s on all the channels I tried.
You read of all sorts of complaints of pixelization on the new 630's. I noticed this a bit on mine but once I peaked the dish, it's been rock solid. I suspect that's probably a big cause of the complaints. Years of heat cycles on your dish mounts can cause the dish to droop ever so slightly. Peaking a dish is a good maintenance practice.