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amm
·2년 전·discuss
>AST SpaceMobile does not seem like they are operating a viable business model. They have been publicly traded for several years and the market seems to agree.

Why would the stock price for a pre-revenue company with massive capex needs and high execution risk do great in a challenging macro environment?
amm
·3년 전·discuss
Cool stuff, but it sure looks like they shipped a premature version asap to front-run the competition.

AST SpaceMobile is getting ready for commercial ops this year with „full broadband“ 5G satellites.

For the record, I am not affiliated with them. I just need that kind of service desperately.
amm
·3년 전·discuss
Back-of-the-envelope approach that should eliminate most branching:

  int table[256] = {0};                                                           
                                                                                
  void init() {                                                                   
    table['s'] = 1;                                                             
    table['p'] = -1;                                                            
  }                                                                               
                                                                                
  int run_switches(char *input, int size) {                                                 
    int res = 0;                                                                
    while (size-- >= 0) res += table[input[size]];
    return res;                                                                 
  }
amm
·3년 전·discuss
Let's see. ASTS claims to have solved this problem. Apparently their satellites have 30mbit+/s throughput with regular 5G smartphones at <100ms latency. If this stuff works (big if), it's going to disrupt the cell tower industry over night and bring broadband to remote places where towers are too hard and too expensive to operate.

Also, I imagine 5G satellites will be of interest to the DoD.

Anyway, the main point I was trying to make is: EU competition is so far behind (even conceptually) that they are playing catch up with 10 year old tech instead of looking where the puck might be going.
amm
·3년 전·discuss
> What's your source for good cost of launching satellite communication networks?

- falcon 9 - $2700/kg

- falcon heavy - $1400/kg

- ariane 5 - $9000/kg

> If the current one works - why would they?

This is just low quality flame bait. If any of the before-mentioned (US) companies succeed commercially long-term, they will transform world-wide internet access especially in less developed countries.

For clarification: as a European citizen, I want the EU to stay competitive in the space tech sector.
amm
·3년 전·discuss
Too little, too expensive, too late?

Once again the EU is playing catch up with last gen tech. Starlink is almost 10 years old - conceptually even older. Iridium has been around for over 25 years.

If the EU was serious, it should have invested proactively in next gen satellite direct to device tech that is around the corner in the US.

AST SpaceMobile is close to starting commercial activity for satellite based 5G that is supposed to work with any smart phone. Starlink is working on something similar with T-Mobile. G-Sat already has minimal D2D capability working with the latest iPhone generation.

Also, I wonder where cost competitive launch capability is going to come from for launching hundreds of satellites. Russia? China?