Because you are not using DECA you need a BSF. the HR44 is still sending "DECA signals" on the coax network which can affect other receivers which were not built to "see" this signals
No need for a bsf, I'm not running DECA, I've been running whdvr over home Ethernet since the service was offered and have had zero issues, and no issues since install with multiple devices accessing internet, pandora on dvr and pulling content from whdvr between rooms. No cable was left unplugged, everything is in an Ethernet switch at the headend. As soon as he removed DECA module from the remote receivers home network came back. At9 is fine, all signals are 92 plus, why switch a dish if not needed. All he had to do was add swm16 multiswitch,power and splitter.
Because of what PEDs said, there is definitely a need for a bsf in your system. A genie isn't like other receivers. You need a bsf properly placed and not right at the hr44 either... It may eventually hurt your other receivers tuners if you don't add a bsf.
And I still don't get the Ethernet having an issue. Maybe you needed to simply reboot the router or something. DECA just doesn't wipe out home networks, its transparent to them. Or if he had hooked up a BBDECA as well as your hr44 to Ethernet that was the issue. Again, something just weird there, and I'm only curios because its just not normal, As long as your set up right, till you have issues no need to change to deca if you really don't want to. But when someone says it doesn't work and kills their home network, I just want to know why that happened for future reference, or better, what really was going on to cause any issues. You'd have to describe everything he did with deca though to really figure out where it went wrong.
And Id change that dish because someday it will be an issue, the side cars have more failures than most because of the exposed wires. I thought techs where supposed to replace them on site at one point just to not have to make another call at some point latter for them. Maybe not.. The side car was just a bad design IMHO with exposed wires. Plus they arent aimed quite the same way as the newer dishes. One of the few things where I say even if its not broke, fix it before it is.. But hey, if its working, hopefully it will for a long time for you... Its just a really weak link IMHO. But the dish may just be me being crazy...