I have a Pansat 2500a rcvr, with a 90 cm fortec dish and stab hh-90 motor, and a Invacom quad lnb with single cables from c output on lnb to rotor, thru to receiver, my zip is 29073(lexington, s.c.). Am getting almost 80 percent on signal level, but zero quality, have not moved my rotor setting, only tried to adjust east/west, elevation for nimiq 2, to no avail, my usals is set for lnb=standard,lnb freq=11250,22khz=off,diseqc=off, skew=off, tp=(1)12223-v-20.000,positioner set=usals,sat scan= fta&scramble, suspect I have something set up wrong causing zero quality, have many mosquito bites, nothing on picture.Should I hook up both a c and l output on my lnb thru a disqe switch before the rotor plug?I'm a newby to this and any set-up info I can get would be greatly appreciated, thanks to Iceberg I am learning alot of the lingo, this loss of quality is baffling me! thanks timp