I also have a 45 foot coach with a Motosat TV dish. And I wired the entire Nomad install myself with a SWM8 switch, so I do have a little experience here.
Exactly why I created this forum Keith.
First - You need to realize that the Nomad controller in and of itself does not need a BBC. The only reason the instructions tell you to put one ahead of the Nomad is because the Nomad's "out to receiver" port won't pass the high frequencies needed for the HD satellites. The BBC downconverts them to a frequency that will pass through. The Nomad itself only needs to see a a "legacy" satellite feed.
Makes perfect sense. Ever since I noticed that BBC on the back of the controller I have wondered why on earth it was there.
BBC or no BBC, it doesn't care, it will still aim the dish. And - here's a key point - this legacy feed can dead-end at the Nomad
This is exactly what I was thinking. If a "loop through" was not needed, this becomes very easy.
you don't actually have to run any line at all from the Nomad to a receiver if you don't want/need to. The receivers can easily be fed separately if desired, using the other three dish coax lines directly, or using a switch if you need more lines. (This assumes that your installer did bring all 4 coax lines down from the dish. If he didn't, call him up and make him do it.)
He did [bring all four down]. I think you mean a splitter, not a switch.
If the Nomad is a recent version (Nomad SD or SD2) with recent firmware, you can supposedly feed the four lines from the dish directly to a SWM8, feed the Nomad directly from one of the SWM8's "legacy" ports, and run your actual receivers from the SWM ports. I tried this back when I had a Nomad 3, but it didn't work. There is a workaround. The workaround is to run the four dish lines directly to a WB68 switch, feed the SWM8 from 4 of the WB68 ports, and feed the Nomad from another one of the WB68 ports. That's the setup I have and it works very well, even though I do now have the newer Nomad SD box.
I have the Nomad 3 (sorry about the confusion... I have two dishes on my coach. Both the 'HD' and a Datastorm). I have the module to update the firmware, so its always current.
Out of curiosity: was an advantage to you upgrading to the SD2, other than the smaller foot print and SD slot in the front?
Haven't tried DECA in my coach yet, because there really doesn't seem to be a need for it. But I see no reason why it wouldn't work, just follow the same rules as you would for a home system with a SWM8. The fun part might be talking D* into enabling it on your RV account. (You do have a separate RV account, don't you? )
I plan on doing the install myself. And yes, I have a copy of my waiver right here with me. I have not tried to see if DirecTV will come out and install the DECAs themselves (something tells me its a no), but I am sure they will give me the "unsupported" flag on my account.
I just happen to have extra DECAs and a couple of SWiM8's laying here, so I think I am gonna move forward on this one. The main reason I am doing this is to get MRV going. I have room for a third receiver (right now my bay TV is being fed off the same receiver as the bedroom TV), and with 3 receivers I can store a lot of movies that can be accessed from any receiver. I have a kid, so this is a win for her.
PS it's a very good idea to run the receivers (especially DVRs) and the SWM8 power inserter from a UPS power supply. They don't take well to sudden or repeated power interruptions, which can happen easily in an RV. The Nomad runs on 12V battery power, which should be an unswitched constant feed. I probably also should point out that my coach is virtually never powered down; it's always either on shore power, generator, or inverter.
I have an all electric myself, so I understand.
I will have two new HR24-500's in my hands this week and plan on switching those immediately. They seem to run cooler, and we both know how important that is.
Thank you for your knowledgeable reply Keith.