Digital Signal Problems

Archived from groups: alt.video.satellite.4dtv (More info?)

G0: No problems at all. All analog come in perfect and digital quality
of 50+.

G1: Analog virtually clear, minor static on a couple channels. Digital:
600-602 no problems, quality of 50+. 100-143 very low quality 10-14 signal
though is at 90.

C4: no problems with analog or digital. digital quality of 45+.

GB: no problems. quality of 45+.

C3: all analog is fine, minor static on screen on a few channels, digital
though; 800-810, 90 signal 0 quality. 700 55+ quality, 680 10-14 quality,
620-623 signal 90 quality 0, 580-616 signal 90 quality 55+, 101-127 signal
88 quality 1-2.

These are the main sats that I want to watch. Any idea as to why some
digital quality is so much lower or non-existent compared to others? I
don't know how old the lnb is, I have ordered a new one to try that.

My equipment: DSR-920 with 6' solid dish. When I was looking to purchase
the dish, since I live in an area where the footprints are high, was told
that the 6' should do me just fine. Their are no obstructions of view. I
do get all the sats, W9 - W7 and get an excellent Nasa channel on W-9 and a
90 signal on the W7 channels (don't subscribe to them, so unsure of static
on the screen.)

Any suggestions of things to try? Replacing the LNB help?

Thanks!!!