Yes, I do want you to scan and post a copy. In a previous post you used the word legally referring to this. That means to me that there is a specific law.
Im going to backtrack on the grounds simply because we do not know the specifics. I've been making general assumptions.
Two thoughts:
First - Regarding whether its commons area or not is determined by the owners and the establishment of the lease. I usually use the general rule of thumb with condominiums, but while apartments can be very similar, they can also be very different depending on the type of apartments. A multiplex apartment complex is vastly different from a basement apartment. If a neighbor can stand right next to that dish and not get in trouble for trespassing, its highly likely its a commons area.
Second - Who owns the dish? After reading up, its a VERY tricky question. Keep in mind this is akin to driving 66MPH in a 65MPH. Nobody cares until someone has something to lose/gain.
There are four "test" rules, with the first being the major part. Keep in mind this is not specifically for dishes, but anything that gets attached to a piece of propety. (word for word)
1) Intention of the annexor: Did the person who installed the item intend it to remain permanent or to be removed? (The courts look at the objective evidence of the party's intent, not his or her subjective intent. In other words, the courts look at the facts surrounding the situation and determine what a reasonable person would have intended by them.)
2)Relationship of the parties: Is the person making the attachment an owner or a tenant? It is presumed that an owner intends a permant attachment (the item becomes a fixture), while a tenant intends a temporary attachemnt (the item remains personal property). The greater the legal relationshp the annexor has to the real property, the greater the likelihood the item will be declared a fixture.
3) Method of annexation: How permantly was the item attached? Can it be removed without causing damage?
4) Adaption to real estate: Has either the tiem or the peroperty been tailored to facilitate working together? Has it been customized or built in to the property?
Looking at number 1, and it being the primary decider. Keyword being "the person who installed it" makes it very tricky. DirecTV and the tech intend on it being permant.(tripods excluded of course). In this case, the tenant and owner do not. If its in the lease, then there is no debate.
2 - Since were talking about Dish's, and if the person owns the property, then its very indicative that it belongs to the property. As far as a tenant, Dish/DirecTV once again usually intends this to be permant.
3 - Once again debateable. No doubt if you remove a dish that has been bolted to a roof, there will be damage remaining. By concreting something in the ground, you are indicating that you do not want it moved, but on the other hand, its just one pole and it can be removed w/out damage
4 - As far as adaptation, yes since the cables run through out the building.
This post is all about food for though. As we can see, there is no clear cut answer. These same general rules will most likely apply in some form or fashion to other states.