a satellite dish is a passive thing, it receives weak signals from far away, mirrors these into a central antenna that picks it up and converts it into an electrical current, which hardly produces any emfs.
that is the official theory.
another view is that these dishes emit "longitudinal" waves that are unmeasurable with meters, although some people experience its detrimental impact or see indirect health effects.
the area straight behind the dish, following the line from the satellite towards the dish and then behind it for quite a distance in a narrow path, is where longitudinal fields are said to hang around and it may be wise not to spend much of your time there, especially during sleep.
this alternative theory usually also states that commonly propagated shielding of the measurable transverse waves is useless while these are not a cause of harm.
i am not so sure of that but do think that shielding may block nourishing natural rays and can be overdone.
outside the es-community, in the world of hard evidence based scientists a similar and possibly related issue is being discussed :
https://vixra.org/pdf/1710.0125v1.pdf the jargon of fysics ain't easy to follow, but reading it still widens one's horizon somehow a bit even without an anywhere near proper understanding of the matter.
The dish is passive, but the electronic device that it's connected to (the receiver) probably isn't*. Aluminum foil will work for the frequencies the receiver would emit, but it works a lot better if it completely surrounds you.
@Shauna130, do you need some help planning how to build a shield? I can't promise a lot, since I didn't feel better in the bed shield I made, but several people here can show you how to make a shield that will block WiFi and FM/AM radio.
The rule of thumb for shielding (from engineering books) is that you need to fully enclose whatever it is you're trying to shield. In your case that would have to be you, since obviously you can't enclose your neighbor's satellite dish. I can vouch for the importance of complete shielding, but only partially: When I built my bed-shield out of aluminum screen, it didn't block the local radio stations until it covered all six sides and every seam was 'laced' together with bare copper wire (except the flap I used as a door, which I held shut with clothespins).
On the other hand, a 55 gallon steel drum will block the local AM stations even if one end is totally open, and it will block FM stations even if there's a 1-2 inch gap between the open end and whatever metal I use to cover it.
I didn't like sleeping in the shield for some reason. It collected dust, which could be part of the reason. I do better with aluminum that's been anodized, but it's hard to do that with screen because it reduces the electrical conductivity between the wires.