Just FYI, the signal strength (Ecb) did not change when I installed the Zinwell WB68 switch with my 505s and 530s. That was one thing I was concerned about was signal loss, and the length of the cables are between 150 - 200 feet.
This is kind of out there, but you're able to have 6 receivers on your account: so if all 6 were PVR's would you be able to setup 2 dishes with 2 multiswitches and have it work (using 12 of the 16 lines)?
Sorry to wander slightly off-topic here, but can you do that? Is the limit on the number of receivers or the number of tuners?
I have 6 single-tuner receivers -- one in each kid's room, one in the living room and one in the basement. Can I swap in a PVR for the one in the basement even though that's actually 7 tuners total?
There is no technical rational to use 2 dishes for this project. All you need is 2 multiswitches, and 4 two way, one port power passing high frequency splitters (or 5 if you are using a 5X8 multiswitch configuration. ). You'll also save a lot of cable!
Just make sure the "legs" are the same going into each multiswitch from each high frequency splitter (the 13V, 18V, 13V with 22KHz, and 18 with 22KHz). All Multiswitches are labled so it's pretty simple. You don't need to use Eagle Aspen.
Larger Multiswitches are available but the costs go up very dramatically. You can grab a Phillips SWD5058/17 5X8 Multiswitch from Princess Auto for about $35, or something off eBay for even less.
I'd pull all 4 feeds from your Quad LNB inside the house, and mount all the devices on plywood. Then feed the output of the Multiswitches to any Tuner / Reciever. Mine is outside so my neighbor can connect using his own Shaw Direct account. He helped out a ton with a very tough install so it was the least I could do.
If you are using a 5X8 Multiswitch you'll also need some diplexers for those TVs where you need to un-multiplex the mixed signal.
I researched various multiswitches and found few that were outdoor rated. As you can see my experience is only recent with the Phillips unit and so far it's working fine. I'm mounting it outdoors, where it should be inside an enclosure of some sort to shield it from the elements (particularly water in it's various forms in winter) and mechanical damage by people and animals.
I've got a 20 X 10 inch plastic enclosure designed for telephone / cable systems for it. It's water resistant to about NEMA 4 enclosure level and quite robust. The photo of the multiswitch is just the temporary install to acertain 100% system functionality. Even the F connectors used will be changed to an outdoor moisture resistant type. I'm contemplating using dielectric grease as well.
My first installation by a *C technician was a stacked elliptical dish with a 2 x 2 multiswitch strapped to the dish arm. Even with proper "weatherproofed" connectors, within a year the cable ends corroded and ruined the switch.
The second installer finally found a hard-to-come-by 2 X 2 switch replacement and installed the cable ends with boot covered connectors. That last a little longer.
I had Shaw replace with the quad lnb's at the time I installed the Eagle Aspen 4 x 8 multiswitch in the shed below the dish. I have had no moisture issues since.
Moral of the story: I don't trust outside placement of multiswitches, even if they claim to be outdoor rated.
Run the four cables from your dish to any dry location where you can provide power. The multiswitch doesn't have to be that close to the dish. All you need is one half a duplex electrical plug and the power cord to the switch is usually fairly generous.