Starlink Internet Satellite


© Brooke Clarke 2021




Background
Description
URL for Router & Dish
Starlink Tracker Web Page
Photos
Patents
Related
References
Links

Background

Currently my sources of internet are:

1. Aa Wireless Internet Service Provider (WISP) using equipment by Ubiquity.  It's fast but stops the second there's an AC power faiulre, something that's getting more common each year because of wildfires and PG&E planned shutdowns when the fire danger is high and it gets windy as well as the power line upgrades being done to support the grow lights (Wiki) associated with indoor pot grow operations.  So, Fast and Unreliable.
2. AT&T ADSL (Wiki) that is provisioned on top of a copper pair phone line.  Because of the copper pair FCC Title II (Wiki) requires that the phone work in emergencies, which working when there's a power failure.  To that end the DSLAM (Wiki, Telephone Poles Fig 11) has an internal lead acid Gell Cell battery good for a few hours AND a seperate pedistall for connecting a backup generator.  This means the DSL works all the time (as so does the associated phone line).  So Slow and reliable.

In the past I've used StarBand satellite service (Wiki: Starband, VSat) which is based on geosynchronous satellites.  The ping time or round trip latency (Wiki) was many hundreds of milliseconds.  That means VOIP will not work.  It also means the page load time for eBay is very long since every icon seems to require a ping to load.  But when there was an AC mains failure that lasted a day to two because someone a hundred miles south of us cut a fiber optic cable and shut down all the local telecphone AND internet service, the satellite based service kept working.  Although I could not phone anyonw, I could email. 

This Starlink (Wiki) low orbit satellite service will also be independent of the local AC power mains and has the advantage that it should support VOIP telephone service.  If it will work on a 24/7 basis then it offers the best of reliability and speed.  But I'm very concerned because I live in a forest.

Description

Getting Started

Within the past week Starlink announced the new square dish system, but the one I received today 13 Nov 2021 is the round dish version.

Even though the App says:"Your starlink WiFi router needs to be updated to use this feature. Please reboot your WiFi router, it may take up to 2 hours to update." Im able to surf on my cell phone (the WiFi is connected to the Starlink router).  CalSpeed:
Upload Speed: 26.94
Download Speed: 131 Mbps
Latency: 73.2 ms
Playback: HD
MOS (Mean Opinion Score): 4.37

Starling CalSpeed 13 - 14 Nov 2021
CalSpeed App tests of Starlink
12 Down on Comcast
Screen Capture on Android: (Volume Down)&Power.  Look for icon showing mountain range at upper left and click on it.

Components

Satellites

It's my understanding that Mark Krebs, inventor of the satellite mesh network, worked for Google then moved to SpaceX.  So the Google patent applies to the Starlink system.  As of 16 Nov 2021 all 1584 of the Phase I satellites are in orbit (Wiki).  But this is a small fraction of the total number planned.

Dish & attached 100' Cable

The Dish is shipped in the Stowed position (Fig 4).  When powered it automatically levels itself (Fig 5).

The dish is a phased array (Wiki) antenna that can steer the beam electronically.  In addition there is a mechanical Pan/Tilt mechanism to physically point the antenna. (see: DE102021100212 patents below).

Router

LAN port with PoE on the back.
AUXLAN port on the back - can be used to connect to computer
Reset hole on the bottom for a paper clip.
LED on the front that can be:
Solid White: Waiting for Internet
Blinking White: Initializing
Red:
Blue: Connected to Internet
FCC Exhibits List - User's Manual UTR-201 -
PoE Input: 56V 0.18A (10W)

Dual PoE Power Supply

This power supply has two LAN ports, each of which has a PoE connection. 

The Gray colored one powers the Dish and is rated: 56V 1.6Amps.

The White colored one powers the Router and is rated: 56V 0.3 Amps.

The two ports share data lines so that the data to/from the dish (gray) shows up on the port going to the router (white).  So if the router is unpluged that port can be used as a general LAN port.

This means all the internet functionality is in the dish assembly.  That's so say there's no electronics inside needed.

Also that means a switch capable of 1.6 Amps at "56 Volts" could replace all the indoor equipment.
I've found power bricks rated: 48V & 240W (5A); 52V & 140W (2.7A);

The Ubiquity WISP system uses PoE in a similar way except they use a 24V supply.  All the internet functionality is in the outdoor dish.

URL for Router & Dish

For my other internet services there's a URL that displays the device as a web page.  For example for the AT&T DSL model it's: 192.168.1.1.
What are the URLs for the Starlink Router and dish?

Starlink Tracker Web Page

https://starlink.sx/   Related Info web page at: https://tech.starlink.sx/

2021 Dec 1 - this is the first day when the Quality bar graph has been 100% with no outages.
CalSPEED (Android, Apple, Desktop) on my cell phone.  CalSPEED sends results to the CPUC and it shows up on their Broadband map.

Date & Time
Up
Dn
Latency
2021-12-01 & 2:10 pm
28.1
115
72.1




Starlink
                      Tracker Web Page Starlink.sx
Upper Left:
  Zoom In/Out
  Information on the icons
  Satellite count summary
Lower Left:
  Local Satellite Summary
Upper Right:
  Various other displays (+) to set your location & Settings
Lower Right:
  Settings for when the satellites are shown (playback settings)



Zoom in on the map so you can see where you are.
Then click on the Target icon at the upper right and click on your location. 
It will show up as a green dot. Hovering does not display anything.
The working satellite link shows up as a solid green line. 
If you hover the pointer over a satellite blue dot you can learn:
Starlink-(satellite number)
Gateway : City, State
Altitude in km
Status: Operational (or?)
LOAN (Wiki): degrees
APAN (Wiki): degrees

Ground stations show up as orange dots.  Hovering shows City, State

The Triangles represent ground stations? and the number inside the triangle may represent the number of 1 meter diameter ball antennas?

Photos

Fig 1 shipping box
Starlink
                      Internet Satellite
Fig 2 dish shipped in stowed position
Starlink
                      Internet Satellite
Fig 3 note gray and white on front of PS.
Starlink
                      Internet Satellite
Fig 4 Stowed position
Starlink
                      Internet Satellite
Fig 5 power on but not pointed yet.
Starlink
                      Internet Satellite
Fig 6 Router LED = Red
Starlink
                      Internet Satellite
Fig 7 Free to Air dish pointing ~South
TCI 651THF antenna in background
Starlink pointing sort of North
Starlink
                      Internet Satellite
Fig 8 bottom & back of Router
Starlink
                      Internet Satellite


Patents


9647749
                      Satellite constellation, Mark Krebs, Google LLC,
                      2017-05-09
9647749 Satellite constellation, Mark Krebs, Google LLC, 2017-05-09, -

10843822
                      Satellite constellations, Jonathan F. C. Herman,
                      Stephen Mance, Paul Forquera, Mark Krebs, Space
                      Exploration Technologies, 2020-11-24
10843822 Satellite constellations, Jonathan F. C. Herman, Stephen Mance, Paul Forquera, Mark Krebs, Space Exploration Technologies, 2020-11-24, - "synchronized ground tracks"  - the density of satellites can be controlled, so more over cities
The Iridium satellite telephone system (Wiki)  also uses a constellation of satellites, see: 5227802  Satellite system cell management, Motorola, 1993-07-13;  20180186477 Space system, Thales, 2018-07-05

The Inmarsat communications system (Wiki)  also uses a constellation of satellites.  See: 5444449 System and method for reducing interference between satellites, Inmarsat, 1995-08-22

The GPS navigation & timing system (Wiki) also uses a constellation of satellites. 

20200382206 Tilted earth-based antenna
                      systems and methods of tilting for communication
                      with a satellite system, Duncan E. Adams, David
                      Milroy, Jonathan François Cornelis Herman, Jessica
                      D. Johnson, Space Exploration
                      Technologies,2020-12-03
20200382206 Tilted earth-based antenna systems and methods of tilting for communication with a satellite system, Duncan E. Adams, David Milroy, Jonathan François Cornelis Herman, Jessica D. Johnson, Space Exploration Technologies,2020-12-03, -

Note dish tilting to the North (see photo Fig. 7 above)

20200388916 Half duplex mode digital
                      beamforming device
20200388916 Half duplex mode digital beamforming device, - how the Earth based antenna works.

Tx and Tx data paths

DE102021100212 Pan / tilt assembly for an
                      antenna device, Erik N. Littleton, Duncan Edwin
                      Adams, Space Exploration Technologies Corp,
                      2021-07-15
DE102021100212 Pan / tilt assembly for an antenna device, Erik N. Littleton, Duncan Edwin Adams, Space Exploration Technologies Corp, 2021-07-15-

Pan & Tilt mechanism

2021/0351513
                      A1 Antenna System and WiFi Router Apparatus, Young
                      Jun Song, Bhaskar S. Vadathavoor, Antohny Sims,
                      Remy D. Labesque, Javier Verdura, Leonardo J.
                      Vasquez, Mohsen Zolghadri-Jahromi, Space
                      Exploration Technologies, App: 2021-11-11
2021/0351513 A1 Antenna System and WiFi Router Apparatus, Young Jun Song, Bhaskar S. Vadathavoor, Antohny Sims, Remy D. Labesque, Javier Verdura, Leonardo J. Vasquez, Mohsen Zolghadri-Jahromi, Space Exploration Technologies, App: 2021-11-11, -

WiFi Router



Related

Starband Vsat -  geosynchronous based satellite internet
AT&T DSL - land line internet
WISP - Point-to-point wireless internet based on Ubiquity equipment

References

YouTube: Ken Keiter: Starlink Teardown: DISHY DESTROYED!, 55:52 -

0:15 Starlink Background & disclaimers
2:25 First Look
3:59 Pan & Tilt Motors behind rear cover
10:54 Power over Ethernet (PoE) - The 886 mpbs speed and PoE is pushing limits (Wiki)
14:16 Outer Enclosure
18:21 Antenna Assembly
30:43 Back side of Antenna Assembly (after cutting glue)
33:13 Front Face of Antenna
35:38 Back of Antenna overview
40:23 RF portion[ correction 10.7-12.7GHz Rx & 14.0-14.5GHz Tx]
47:17 hexagonal array Honeycomb over antenna elements
48:17 material stack-up (See The Signal Path)
53:36 cut away into material stack-up
55:07 closing
The Signal Path: TSP #181 - Starlink Dish Phased Array Design, Architecture & RF In-depth Analysis, 33:42 -
1:12 Front surface & ray dome design
5:28 Back surface of ray dome
9:10 Closeup of copper antenna disks on antenna face
9:46 Main board and radiating elements
16:57 zoomed in main board (example 100GHz 25 element phased array)
18:41 back (component) side of main board
21:22 Beam forming architecture "Digital Beam Forming (DBF) "Front End Module" (FEM)
28:50 X-ray
Colin O'Flynn: Starlink Dishy (Rev2 HW) Teardown Part 1 - UART, Reset, Boot Glitches, 40:07 -
0:00 Intro
0:50 Snapping plastic open
2:10 Blowtorching to heat glue
3:51 PCB visual inspection
8:32 Probing for UART -Tigard
14:56 Adding UART header
18:00 eMMC Short (pin2pwn)
22:15 Electromagnetic Fault Injection (EMFI) introduce EMI pulses without wires
27:20 Pin Strapping
30:02 Reset Pin / Header
34:00 Reset Pin Testing
36:00 Header Pinouting
38:17 JTAGulator Failing 39:00 Finishing Stuff
MikeOnSpace: Starlink Dish TEARDOWN! - Part 2 - Serial console and login prompt. Can you guess Dishy's password?, 22:37 -
0:00 Intro
0:57 Ken Keiter Teardown Highlights
4:40 Next Steps with Debug Port
5:26 Debug Port
7:35 Serial Analysis on Scope 17.56 USB Interface to User Terminal
19:00 Serial Console Bootup
20:04 Speed Test! 21:09 Bootup Highlights
22:17 Closing
  SUPER FAST INTERNET on a BOAT with STARLINK - Sink or Swim 219 -
1. Can you tell us if it continues to work as the boat moves about? (BC: since the GPS will tell the dish it's location it should work, but I've read that it only works in a small area.)
2. Does the dish physically move as the boat turns?  (BC:  I expect the dish to point North so it should turn as the ship turns.  There may be a limit to how fast it can pan and tilt so probably will only track in calm seas.)

This may be an option for people with RVs.
Starlink on a boat - Update, 6:12 - mentions going to the Starlink web page and changing his service address when the boat arrives at a new mooring.  He does NOT use Starlink while sailing.  Only when anchored.

Links

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Page Created 2021 November 13