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 > New smartphone direct-to-Starlink satellite service

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bgum

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Posted: 08/26/22 11:54am Link  |  Quote  |  Print  |  Notify Moderator

After Katrina in south Louisiana land lines were out of service as poles and wires were down, cell phones were out of service due to cell towers and equipment being out. This was not a short term problem. My employer sent a satellite phone for my use. I was only able to connect to one site and then only for a matter of seconds before disconnect. While discussing the problem I was informed that the military had sucked up all the satellite time.

Now when the general population is trying to use this what do you think will happen?

Lwiddis

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Posted: 08/26/22 12:27pm Link  |  Quote  |  Print  |  Notify Moderator

Exciting news indeed! No "dead spots" would be wonderful.


Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


Skibane

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Posted: 08/26/22 01:52pm Link  |  Quote  |  Print  |  Notify Moderator

bgum wrote:

After Katrina in south Louisiana land lines were out of service as poles and wires were down, cell phones were out of service due to cell towers and equipment being out. This was not a short term problem. My employer sent a satellite phone for my use. I was only able to connect to one site and then only for a matter of seconds before disconnect. While discussing the problem I was informed that the military had sucked up all the satellite time.

Now when the general population is trying to use this what do you think will happen?


Maybe additional satellites will be deployed to meet demand?

SpaceX is going to be spitting these new bigger satellites into LEO like a PEZ dispenser - they're going to be mass-produced, in the thousands. (Their FCC filing specified up to 30,000 of them.)

Compare that number with the dozen or so satellites currently being used for satellite phone service.

pianotuna

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Posted: 08/26/22 03:45pm Link  |  Quote  |  Print  |  Notify Moderator

Ed_Gee wrote:

pianotuna wrote:

How the heck are they going to use 1/10 of a watt to transmit to low earth orbit??


Essentially, a new generation of satellites, bigger, more powerful. Read the link in my other post here.


I can understand receiving a signal from a more powerful satellite, but how is 1/10 of a watt going to "reply"?


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

time2roll

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Posted: 08/26/22 04:09pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

I can understand receiving a signal from a more powerful satellite, but how is 1/10 of a watt going to "reply"?
I read there are new satellites with larger antenna for this.
Maybe the phone would know if there is no ground service to up the wattage some just to send a text. No streaming movies during the initial roll out.

SpaceX has already done the impossible in so many other areas... this was inevitable.


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wa8yxm

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Posted: 08/26/22 04:19pm Link  |  Quote  |  Print  |  Notify Moderator

Horsedoc wrote:

wonder how that cell phone signal gets TO the satellite?

Same way it gets to a tower... You might think that to talk to a satellite you need lots and lots of power... NOPE. Though I've never done it.. Many Ham radio operators talk to satellites or even the International space station using 5 watts or less...(Yes there are ham radios on the ISS and all the astronauts occupying it are licensed Ambattur radio operators)

Though I've never talked to the ISS. I have heard their transmitter (Full scale) sending what is called Slow Scan TV (30 seconds per frame instead of 30 frames per second) Very strong signal.
You see when it comes to radios.. Height is Might and the Satellites.. they got the height.


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Skibane

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Posted: 08/26/22 06:25pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

I can understand receiving a signal from a more powerful satellite, but how is 1/10 of a watt going to "reply"?


Increasing the receiving gain of the antenna on the satellite reduces the amount of transmit power required from the smartphone.

Having big "ears" makes it easier to "hear" weak signals.

pianotuna

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Posted: 08/26/22 07:07pm Link  |  Quote  |  Print  |  Notify Moderator

about 52 db of gain I think for the gain on the satellite--if I understood the article I read.

That may be enough for leo.

Skibane

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Posted: 08/26/22 11:34pm Link  |  Quote  |  Print  |  Notify Moderator

As mentioned in the Ars Technica article previously posted, AST Space Mobile is also working on a satellite design that "talks" directly to terrestrial smartphones.

Like the SpaceX scheme, it doesn't require any software or hardware upgrades to the smartphones.

Unlike the SpaceX scheme, there is no plan to deploy up to 30,000 of them.

NamMedevac 70

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Posted: 08/27/22 05:29am Link  |  Quote  |  Print  |  Notify Moderator

This is great news. I am curious as where all these SpaceX satellites will be made in what state??? EM, SpaceX and Tesla does it better. Amazing good show.

* This post was edited 08/27/22 06:39am by NamMedevac 70 *

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