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Folks...I'm about to do an install of the new MPEG 4 system at my house, and would like to do a post install using an old C-band post. Could someone please give me info on the following...

1. With the new dish, does it still use the same 1 3/8" post?

2. I need to buy cable...how deep should it be and I assume the cable needs to be rated for burial?

3. The system will have one HR20, a HR10 and another DirecTV Tivo unit. Do the connectors on ALL cables have to be replaced? For that matter do ALL cables have to be replaced to ensure that they are good to 2 gig, or does this apply only to those going to the HR20? I guess I'm asking if I can get away with existing cables/connectors from the multiswitch to the two older receviers.

4. Four DTV lines need to go to one room. There is a fifth RG6 available for this room. Is there any reason cable TV and over the air UHF (for OTA HDTV) could not be combined in this fifth run?

I've done quite a few of the ku band installs but this is my first ku/ka. Any other pitfalls I should watch out for? I've already viewed the DirecTV install video which emphasizes the need for precise alignment.

Thanks!
 

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1. No. The AT9 dish uses a larger diameter post than the older dishes.

2. The cable should be rated for direct burial but you might want to consider using conduit. Most residential codes require that any cables be buried below the frost line (about 18 inches or more, depending on your climate and location). You could probably get away with burying it 6" or so but deeper is always better.

3. Solid copper center conductor RG6 is recommended with compression connectors for all cables used in the mpeg4 signal path. Belden 1694A is a good choice but can get a tad expensive. I found it for a good price at Tri-State Electric using google search. You should be able to use your existing cabling for any legacy receivers.

4. I have heard that you can use a diplexer to combine the OTA signal with one of the lines coming off the multiswitch but don't hold me to that. The mpeg4 signals coming off the dish are in the same frequency band as the OTA signals so I'm not sure if they can be combined successfully. If you can run a separate antenna line to the room then I would highly recommend that you do so. There are several threads that discuss this elsewhere in these forums so you might try doing a search to see what you can find.
 
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