do the 2 tuner receivers such as the 721, 522, and 322 count as 2 receivers on your account? Can I only have 3 of those type of receivers or can I still get 6 and be able to output to 12 different TV's?
Although the 721 is two tuners, it can only output to one tv at a time. The 522/322 can output to two different TVs (one tuner for each). As for your real question, I believe they only count as one receiver, but I'm not positive.
As long as you keep the phone line connected you will only be charged for 1 receiver. As long as you do this you can have up to six 2 Tuner receivers as they count as 1 receiver when phone line is connected.
FYI, if you do not have a phone line connected the 322 and 522 remind you every time you power on that you will be charged for an extra receiver.
Called Dish tech because my 322 location is is in my detached Garage/studio and I don't have my "main home" phone line out there, only a data/fax line which is a different number than the one on my account (address is same). Tech asked Manager and was told as long as it is connected to any phone line you will not be charged for an extra receiver. After connecting and performing "Dial Out" , it said "Smart Card updated" and the warning screens disappeared and have not shown up since.
I have no intentions of running 12 different outputs. I was just giving an example. I might eventually want to have maybe 4 - 2-tuner receivers in my house, 1 for living room / my bedroom, 1 for den / daughter's room, 1 for my 2 other daughter's rooms and one to put in my workshop building out back (Half is my PC workshop, the other half is my wifes sewing room) I was just curious if each tuner counted as a receiver.