This thread made me join. haha.
Good question OP. I'm a communications tech. I work for a top 10 defense contractor that manufactures satellites and launches them from the Space Coast. Basically, the satellite acts as a repeater. The transmission comes from our earth stations, include voice and data, and transmitted to the satellite which then streams the data (repeats) back towards earth, where a properly pointed dish can receive. The dishes typically are able to send/receive data and the communication to/from the satellite and earth station is two-way, bi-directional.
I have installed commercial dishes for end users (gov't, military, gas and oil rigs, ships). I assure you that they work when pointed correctly at the sky, and don't work if they're just inches off. There's an entire procedure involved in pointing and setting a dish as well as math helps on getting the angles correct. Once linked up, I can send test messages to a Network Ops Center where a tech verifies my data and sends me out a test reply which I also verify.
I also work with microwave (ground to ground stations), fiber, central office, network, PSPC radio, backbone, etc. I'm a tech, not an engineer, so my 25 years of experience involves the installation and maintenance of comm equipment. My work involves correctly pointing, provisioning, and testing large scale wireless communication devices.
FE'rs need to work this info into their model somehow, because satellites exist and are in use all over our flat earth. There's no need to be afraid to admit that they are real.
Satellites are real and you do not have the need to know basis of the truth behind satellites. Yes your company may manufacture the satellites and think they are being "launched" into orbit but that is not really true. They are not in space but are typically kept in the sky by very large hydrogen balloons. They range in elevation between 40,000 to 80,000 feet in the air.
Here is one of the stations where balloon launches occur. Look at the bottom for schedule of past launches.
http://stratocat.com.ar/bases/37e.htmPlease note the MIR launches which are pieces of the ISS which is also on a balloon.