Questions tagged [communication-satellite]

Questions about satellites designed to aid in communications, such as phone, TV and Internet satellites.

13 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
7
votes
0answers
209 views

Were solar concentrators on HS-702 just a stop-gap measure until triple-junction PV cells were available?

According to Gunter's Space Page discussion of early versions of the Hughes HS-702 Bus: The first version of the 702 used solar arrays with concentrators. These concentrators tended to early ...
6
votes
0answers
261 views

Can they watch TV at the South Pole? What satellites are used for data, comms, and entertainment?

edit: This answer adds one more piece to the puzzle, at least for data. For navigation, I believe GPS covers the poles. For data, there is at least Iridium (see answers to What (actually) makes ...
4
votes
0answers
288 views

All Optical Global Network - how does the space-to-ground link avoid clouds?

I just saw the news item in Lightwave's online website: Laser Light to leverage free-space optics in space for Optical Satellite as a Service. All Optical Hybrid Global Network (or HALO, as laser ...
3
votes
0answers
157 views

Have the Starlink precursor Tintin satellites been talking to each other? If so, how?

Tintin A and B are the first two exploratory and testing spacecraft for SpaceX's Starlink program. It looks like they are in very similar orbits in both space and time, and are probably that way so ...
2
votes
0answers
61 views

What is a “critical mass” equivalent of number of satellites on LEO that would initiate chain reaction of destruction if 2 of them collide?

If a satellite is destroyed and blown to multiple small pieces of debris, each one of these pieces has tiny probability of destroying another satellite, creating more debris which now will have even ...
2
votes
0answers
387 views

What technology will SpaceX's StarLink satellites most likely use for sat-to-sat linking?

The question How does SpaceX plan to make money with StarLink Broadband? has got me thinking about how the satellites will link to each other. Wikipedia says it's something greater than 10,000 GHz ...
2
votes
0answers
276 views

What kind of power is referred to in “the…most powerful all-electric propulsion communications satellite ever produced”

The Florida Today article On second flight, SpaceX Falcon 9 rocket to launch 'brute' of a satellite from Cape describes the upcoming SpaceX launch of SES-12. Next to this tiny image of (presumably) ...
2
votes
0answers
40 views

Which materials make up a Commercial Satellite?

I'm writing a story based on the premise that an already-existing moon base is used to mine, construct, and launch a bunch of commercial satellites to GTO (the lunar surface is way "closer" to GTO ...
2
votes
0answers
375 views

How exactly does the live feed from ISS work?

Using my cell phone in a city to download lots of data very fast is common, thanks due to the dense net of base stations close to me (~1 km). But with the space station about 400 km above ground and ...
1
vote
0answers
38 views

How much of the piggybacked Aireon system rely on its Iridium Next hosts?

The NBC News article Next-generation satellites gave federal officials key data in Boeing 737 Max investigation says: The Federal Aviation Administration, or FAA, grounded Boeing's 737 Max ...
1
vote
0answers
177 views

What are the photonic components on Hispasat 30W-6? What do they do?

In the marketing blurb about the payload in the SpaceX video HISPASAT 30W-6 Mission beginning at T- 00:05:45, there is mention of a demonstration of photonic ...
1
vote
0answers
61 views

Does a low-orbit communication network drive a sustainable launch market?

With SpaceX recent announcement of a huge satellite network in low earth orbit, I was wondering if such a network would motivate a sustainable large-scale launch capacity, i.e. a increase of scale of ...
0
votes
0answers
25 views

Relation between beamwidths of E-plane and H-plane

Is there any relation between E-plane and H-plane beamwidths of an antenna when steering in azimuth and elevation directions?