AVS Special Member
Join Date: Nov 2001
Location: College Park, MD
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You really need to involve a local DirecTV commercial dealer in this project.
You also need to look up the frequency channel allocation plans for broadcast TV and cable. They are the same for channels 2-13, but after that, broadcast or UHF channel 14 is roughly, but not exactly, the same frequency as cable channel 65, and the highest broadcast band channel that contemporary TV channels can tune, channel 69, is about the same frequency as cable 125.
There are different ways to integrate digital broadcast signals and digital satellite cable channels into on single coax, but all involve tradeoffs and have drawbacks. If you have LG TVs, there are a lot of ways to combine the signals with relatively low priced headend equipment because the LG TVs can often either decode broadcast TV signals when they are simply frequency shifted into cable channel slots, or some LG TVs can actually map broadcast and cable channels into the same channel guide.
If you are simply planning on taking a bunch of receivers that are activated as individual television tuners and modulating them, that is probably a violation of your terms of service agreement. DirecTV can allow that for your class of customer, but under a different contract and pricing structure.
Do you have current relations with your local DirecTV dealer, and do you know if they are able to service a small private cable headend?