I can't remember what dish receivers I own, have 3 of them. I called dish and got a free up grade. Dish told me to keep my receivers. Each receiver was good for only one TV. I had 3. The upgrade allowed me to get by a little cheaper and it didn't cost anything.
I'll check tomorrow see what I have. If you can use them, they are yours. I'm not sure if anyone can use them. They have a smart card.
Post back tomorrow evening, if I don't forget.
Here is the scary thing, When dish did an upgrade it took them a long time to work the bugs out. I found out the dish, eye and receivers were all used, the eye was bad. Then dish wants you to pay for a maintance fee on their used stuff.
When it comes to adjusting the antenna, there is a channel on your TV that is your meter. I used telephones to communicate with the person in front of the TV, BETTER OR WORSE. I think there are 3 or so different adjustments to fine tune antenna. Good luck. Also as you know trees will mess with you. George