If your initial setup is slightly flawed, will that mess up USALS?

[penguinsix]

I put in my dish the other day and got a pretty good signal from my true south satellites, SBS-6 and AMC-5. I've grabbed a slew of channels off of T-5 and a few other satellites in between 60-100 degrees, but when I go farther than that I don't find any signal quality.

Tonight I was poking around and ended up hitting Satcom3 which I guess is a C-band satellite. When USALS was moving the dish, I noticed a quality spike just before the dish settled on the USALS position. I switched to Diseqc and moved the dish back to the East a few clicks and the signal quality eventually came through (I only got one station off the whole bird so a bit of an effort).

But it got me thinking--if I did something slight wrong, or didin't get it "just perfect" on the initial install, would that be causing errors exponentially when I got out to the farther East and West satellites? I'm wondering if I should start over and get a stronger signal from my due South satellites before looking East/West.

Could a flawed initial install cause USALS problems as described? Or it is just the trees and other obstructions preventing me from finding some of the other satellites?

 

[PSB]

Wow! Yes unless the install/Setup was as perfect as you can get it your USALS positions will be out. Some satellites I find will just not work with USALS (Fortec Liftime Ultra) and some just work better with DiSEqC 1.2

 

[scupmando]

My three installs were always off by a few degrees. I could have readjusted the dish, but found it easier to just adjust the longitude setting for usals by a few degrees in the receiver set-up to compensate for any difference. My true south is 79, but my receiver's longitude is set at 82. Haven't had any problems. Finds every satellite up there, but probably loses me a bit in quality. Just my two cents.

 

[penguinsix]

Would it be more likely that this sort of problem is releated to elevation, since an incorrect elevation would cause more exponential problems E/W?