I hold an HD cable box and I want to buy the exact same make/model etc. online for a second HDTV, will it work
Answers: A box purchased off of eBay will not work beside your cable provider. Each box that is within a cable companies network, have specific encryption codes loaded in their headend computer. These encryption codes are generate by the set top manufacturer and loaded singular on the headend computer that the box is going to be used on. Cable companies will not request new encryption codes from the manufacture for a box that was purchased out of flea market.
Secondly, Your cable company might not have an OS code contained by their headend computer that matches the build and rev of your box. Without that code or encryption key, the box that you purchased off of eBay just makes a dutiful doorstop or boat anchor.
In the near adjectives, you are going to be able to purchase set top boxes from retail stores that will work on any cable plant. These untried boxes will have separable financial guarantee that you will have to rent from the cable company. The separable protection will be a cable a cable card that you insert into your purchased box.
Here is some lite reading on Cable Cards.
http://en.wikipedia.org/wiki/Cable_card
Most likely no. If you subscribe to HD service from the cable company they will obligation to activate and thus charge you monthly for the latest box. Unless the box you're buying has be hacked dishonestly.
Best to just directive a box from the cable company.
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