Thank you. Under the Over-the-Air Reception Devices Rule (Section 207 of the Telecommunications Act of 1996), a landlord is prohibited from restrictions that impair a person's ability to install, maintain, or use an antenna covered by the rule.
"Antenna" includes a dish that is one meter (39.37") or less in diameter. (This is why I asked you how large the dish was.)
For the whole rule, see here:
As such, someone in your situation may wish to write back to the landlord, stating that under federal law, they cannot deny you your right to have this dish.
Let me know if you need a sample letter. If he continues to resist or takes down the dish himself without your permission once one puts it up, he can be sued in court.
Aside from this, blocking your emails and/or not getting along is not reason enough to void the lease, because the landlord is not practicing "constructive eviction" (making it unlivable by his actions, such as intruding upon one's rented space unannounced or turning off the utilities).
Summary: From what you have told me, I do not see enough to break the lease. HOWEVER, he cannot stop you from putting up the dish, or, should not.
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