How would you rate the BSC-621 on Ku?
A number of BSC-621 threads seem troublesome about the focus problem. From what I read, some people opted to replace their 621s with the Satellite AV CK1 product.
It's fair on a poor-fair-good-best scale. But I've only used Geosatpro's (best), a Techsat Tracker II+ (best DX), and a Gilat VSAT Rx LNB (good, very stable).
The BSC-621 Ku-side is the worst out of all of them.
But I don't think that says too much about the BSC-621 since what I have to compare it to is the some of the best Ku LNBF's IMHO
Knee-jerk reaction: I would have to struggle ghetto-aiming that beast get a 70% on a good day, so that on a bad day we'd never see a 63% dropout on a bad day. So reception fluctuates on the Ku-side(wait that's with the cap). Without the cap, C-band is great(80%-97% Q's), and Ku (70%-90%) is okay.
Clarifying, I have a 1/4 inch focal-length separation between having perfect C-band reception and perfect Ku-reception. C-band being more forgiving, I give as much as I can to Ku since C-band takes about a 6% loss on the Coolsat. As far as hitting the Ku sweet spot with a BSC-621? Not something to be left to a newbie as his first project. It was like giving a newbie an intermediate-advanced project as his starter. I had to go and get a Geosatpro dish to make sure that it really was that hard to hit Ku for reliable reception. That and learn how important skew was for Ku.
The biggest problem I had was figuring out the orientation. Mine was way off what everyone else's was. Arrow at 12 o'clock, LNB/Switch box at 45° Top-East quadrant.
If there is an issue, why not address it first since the LNBF is in hand already?
FWIW...
Ku reception as far as aimed at a sat was not my uncertainty, It's a 4-click having enough resolution to find Ku sweet spots. Once I find the sweet-spot, the gain on this dish makes up for almost any shortcomings.