![]() Note that this is the lower limit it's physically impossible to do better than this. So my formula gives a rough approximation of Hobbes' result. Taking the numbers from answer:ġ5 GHz -> wavelength ~ 0.0214 m, distance = 36*10^6 m and the transmitter = 10 m. This is just an order of magnitude formula obviously the beam doesn't have a sharp edge. There are several ways of arriving at this, such as Heisenberg's Uncertainty Principle (the smaller the transmitter, the more you know the position of the beam, therefore the less you know about the direction). I am unsure if the diagrammed scenario happens universally with all geosynchronous satellites, or only with the one listed in the image source.įor the uplink, there is a theoretical lower limit of the width of the spread that is ~ (distance between receiver and transmitter)*(wavelength)/(size of transmitter). As a final note, the following is a diagram showing the main lobe from a satellite leaking during the downlink process. The above points are things to consider with satellite uplink leaking into space, but I am also curious if satellite downlink can also leak. The main lobe has the strength to travel into geosynchronus orbit, but I'm unsure if the side lobes are capable of leaking into space. Which of these scenarios seems to be more accurate? Does the type of satellite uplink affect how much a signal spreads? (Ku-band, Ka-band, S-band?) Is a standard household satellite internet transceiver uplink more likely to leak then a teleport uplink due to the dish design?Īnother note to consider, I discovered while doing some Google-fu that satellite signal uplink also consists of "lobes". ![]() As a result, this spread results in much of the signal leaking into space. Possible Scenario Two: The signal of the satellite uplink spreads from the source of the uplink, similar to the path of a light of a flashlight. Either little, or none of the signal leaks into space. Possible Scenario One: The satellite uplink maintains it's path/signal width into geosynchronous orbit. The following images are two possible scenarios which I drew to help illustrate the path for a signal uplink, and I'm unsure which scenario is more accurate. I am interested in knowing how much a signal leaks into space during the ground-space-ground communication process. Snow says, 'Apparently that's OK, but it's not the same thing for Ellen's fictional character.Satellite communication generally involves three types of nodes: the ground station (also known as teleport), the satellite in geosynchronous orbit, and the satellite receiver/transceiver. Ironically, the ABC News program '20/20,' during which star Ellen DeGeneres discusses her own 'coming out,' will be broadcast on WBMA. It may be the biggest event of its kind ever in the state.' Organizers say the party will allow Birmingham residents the chance to participate in 'television history in the making.' No other television lead character is openly gay. Snow adds, 'In fact, there's widespread support for this. BPA Vice President Kevin Snow, who expects approximately 3,800 people to attend the party, says there was no problem renting the auditorium for the event. ![]() ![]() Birmingham Pride Alabama and GLAAD will host a 'Welcome Out 'Ellen' Party' at the Boutwell Auditorium in Birmingham that night, complete with a feed of the banned program. No other affiliate has said it will black out the program. Gay & Lesbian Alliance Against Defamation Entertainment Media Director Chastity Bono criticizes the action, saying viewers should decide for themselves what they wish to see. WBMA-TV General Manager Jerry Heilman labeled as 'inappropriate for family viewing' the episode in which Ellen DeGeneres' character (Ellen Morgan) admits she is gay and plans to black out the program. BIRMINGHAM, Ala., April 23 - Gay rights advocates have arranged for a satellite downlink to beam the ABC program 'Ellen' into Birmingham, Ala., April 30, bypassing the local network affiliate which refuses to air the show. ![]()
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