I had called DirecTV to get my side-car dish (AT-9) fine tuned - it has been on my roof for almost 2 years, and I wanted to get my signal strength raised on 103b - even though I was getting all of the channels without problem.
Halsted Communications, the local installers sent a guy on Monday that had no clue on how to do something as simple as this - and he left with me LOSING signal on ALL of the even transponders on 103b. I actually lost CNN-HD, and others for this period of time.
I had to use my contacts to get a tech supervisor back to my house the same day (I only waited about an hour for him to show) and within 10 minutes had everything back to BETTER than ever. Instead of 60-70 signals on 103b, I now have 90's - and I have increased signals on all of the other sats as well.
Point being - don't accept low readings when you have an installer there - and if you don't like what you are getting call DirecTV and have them get a supervisor out to your house. The stronger the signal, the less rain-fade can affect you and so on.
Also, as a courtesy, the tech supervisor changed ALL of my compression fittings, and installed a brand-new multiswitch.
Jusy FYI.