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| Thread ID: 146020 | 2018-04-03 03:48:00 | Why isn't all the signal used up? | Roscoe (6288) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1447994 | 2018-04-03 03:48:00 | I was wondering - there are thousands of satellite dishes pointed skyward receiving television broadcasts from the Opus 1 satellite and yet there does not seem to be a limit to how many satellite dishes can receive a signal. The satellite only sends out a certain amount of power and so I wonder why all the signal does not get used up. There just seems to be an unlimited amount of signal. Anybody have any idea why that is so? |
Roscoe (6288) | ||
| 1447995 | 2018-04-03 04:41:00 | I was wondering - there are thousands of satellite dishes pointed skyward receiving television broadcasts from the Opus 1 satellite and yet there does not seem to be a limit to how many satellite dishes can receive a signal. The satellite only sends out a certain amount of power and so I wonder why all the signal does not get used up. There just seems to be an unlimited amount of signal. Anybody have any idea why that is so? Most of the signal just gets wasted. Just like with radios Sat receivers dont need much signal. The little signal they get , gets amplified after it hits your sat dish. The bigger the sat dish, the more signal it can collect Even various .5W transmitters can get a damn good range/distance. From up in space theres nothing to block the signal apart from rain & clouds Think of it like shining a torch towards a few people . Each eyeball can see small part of the light beam. All the rest is wasted light. |
1101 (13337) | ||
| 1447996 | 2018-04-03 04:56:00 | It will get used up when the entire surface of the world (or rather the surface inside the satellite's footprint) is covered by dishes. | decibel (11645) | ||
| 1447997 | 2018-04-03 05:26:00 | Some of the signal heads on out to space and may keep going forever. 1101's torch example is perfect, that's exactly what happens. Radio waves and light are the same thing just at different frequencies. Think of the power output of the satellite as how bright the torch bulb is. Also makes it easier to understand how a dish works, by reflecting a greater area of the signal onto a small receiver - like a mirror focusing light onto an eyeball. | dugimodo (138) | ||
| 1447998 | 2018-04-03 06:04:00 | Thanks for your explanations, fellas, particularly dugimodo. Thank you 1101. What you have said makes sense. Much appreciated. |
Roscoe (6288) | ||
| 1447999 | 2018-04-05 21:44:00 | It's a bit like a major sports business event, more eyeballs in the stadium doesn't make the players appear progressively fainter and blurrier as the coffers get more $$. | R2x1 (4628) | ||
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