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C🅰️tSE Profile picture
C🅰️tSE
@CatSE___ApeX___
Curios cat. 🅰️ Shū-tier support animal
Jun 6 • 27 tweets • 12 min read
🚨AST UNVEILS ACTIVE RADAR CAPABILITY IS ALREADY IN SPACE ! 🚨

— FM1 AND BLOCK 1 ASSETS TESTING PULSED RADIOLOCATION IN 902-928 MHZ FOR SDA / GOLDEN DOME PROGRAMS

🧶🐈‍⬛ CATSE “LET’S UNPACK THIS BEAST!”

MEGA-THREAD Image
 The June 2026 STA (SAT-STA-20260603-00226) shows one of its in-orbit LEO satellites transmitting short pulses with 20% duty cycle into the three feeder gateways (Midland TX, Lanham MD, Kapolei HI). This is active pulsed radiolocation — the transmit half of a radar-type service
1/ Image
May 27 • 17 tweets • 5 min read
The EC just dropped its 2 GHz MSS proposal (27 May 2026). 30 MHz paired segmented into 3 × ~10 MHz blocks. Cat 1 (gov/IRIS²), Cat 2 (EU commercial), Cat 3 (open). Comparative selection, not auction. Strong sovereignty tilt. But waivers exist.
🧶🐈‍⬛ $ASTS
1/ There is a Control test = Article 24(2) Reg 2021/696: EU establishment + management + activities + no decisive third-country influence. Basis: security, resilience, strategic autonomy (recitals + 2025 RSPG/study/consultation).

2/
May 25 • 31 tweets • 9 min read
This thread had 180k views to date.

It’s interesting how a simple declaration of facts can be so provocative.

The thread covers an instance of Systemic Counter-Productivity in Starship booster.

This specific one was labeled by historian Edward Tenner, the ”revenge effect".

1/ The Law of Unintended Consequences is another way to label the overarching concept. It states that purposeful actions, often produce unforeseen and negative outcomes alongside or instead of the intended results. Popularized by Robert K. Merton in 1936.

2/ Image
May 23 • 45 tweets • 15 min read
What does the capabilities of a full $ASTS Spacemobile constellation look like?

what can it do?

1/ Image Conceptually it is a way to use solar energy and spectrum to produce intangible services such as assured PNT, sensing, IoT comms, DoD comms and broadband commercial comms.

We’ll consider the latter.

Broadband commercial comms.

2/ Image
May 23 • 22 tweets • 8 min read
Starship has a basic engineering design flaw that has to do with probability calculations.

Failure risk tradeoffs between these two risks:

single engine failure and
fratricidal propagating engine failure

And starship has a suboptimal design.

1/n To reach orbit a single engine failure can stop that.

Beyond ~7 engines you reach a point where a single engine failure will not prevent that.

This is one big rationale for using multiple engines.

The 9 in Falcon 9 is the number of engines.

2/
May 16 • 12 tweets • 3 min read
If your $ASTS thesis hasn’t changed in the last 48 hours, you are driving while looking exclusively in the rearview mirror.

The mid-May 2026 macro environment just delivered a dual paradigm shift that rewrites the entire SatCom playbook. Let's break it down.

🧶🐈‍⬛ Image For two years, the narrative was frozen: A siloed turf war.
• AT&T & Verizon backing AST SpaceMobile ($ASTS)
• T-Mobile strictly exclusive with Starlink
Analysts built entire valuation models around this tribalism. This week, that legacy framework completely shattered.

2/ Image
May 15 • 15 tweets • 4 min read
Telecom & space defense just shifted. T-Mobile USA pooling spectrum with AT&T & Verizon for AST is a massive geopolitical pivot

It is at its core about national security.

1/ Follow the money: T-Mobile USA is 53% owned by Deutsche Telekom. The German state holds a 28.6% block. Berlin is driving this well coordinated and timed defection from Starlinks regenerative network.

2/ Image
Image
Mar 15 • 6 tweets • 3 min read
It is an underappreciated fact that $ASTS Bluebird constellation is capable of rendering Russian GLONASS system ineffective globally or regionally while not jamming allied GPS.

The LEO PNT-Denial military use case.
(One of many)
🧶🐈‍⬛

1/n Image
Image
Image
Image Consider first upper L-band and Block 3 bluebirds stats, Seperately.

2/n Image
Image
Image
Feb 16 • 35 tweets • 11 min read
All of it.

Per public request.

$ASTS

1/ Image Chapter one.

MESA and the L-band duality.

The Sensor Superiority Advantage
Sensor superiority isn't just about "seeing" first; it’s about Decision Space.

2/
Jan 23 • 10 tweets • 3 min read
In Latin, the concept of drawing an inference from what is not shown or mentioned is most commonly expressed as:

Argumentum ex silentio

$ASTS

🧠🐈‍⬛

1/n Image When the last BlueBirds deployed there was two patterns.

One was a spike in drag and the level of drag settling on a higher level afterwards.

The other and first sign was a delay of TLE data longer than usual.

In a way the first -inconclusive- sign was the absence of data.
/2
Jan 8 • 9 tweets • 3 min read
Deploying a 200 sqm array within two weeks of launch is a high-stakes move. Historically, large structures wait longer for "checkout."

Is the upcoming FM2 launch giving us a faster deployment?

There is now FM1 data.

1/ Image Here is drag data.

/2 Image
Image
Jan 6 • 20 tweets • 9 min read
I was asked to comment on Space-x last Ex parte letter that they have filed to the FCC.

So here is the picture:

$ASTS has asked authority to launch full constellation beyond 25 satellites.

Space-x wants to delay and complicate that.

They keep filing all the way to sunshine
1/ Image It’s extremely uncompetitive behaviour and a bit immoral as what Space-X has begged be implemented onto AST is the same type of regulations they see as an obstacle when applied to themselves.

What they ask that AST shall not be allowed to is what they themselves do.
Golden rule? Image
Jan 2 • 31 tweets • 12 min read
_One way to increase Area spectral efficiency is lowering constellation altitude.

That way comes at two costs: The number of 🛰️satellites required on orbit increases and their orbital dwell ⏳time decreases both affecting the replenish rate 🛠️adversely as:

🛠️ = 🛰️/⏳

🧶🐈‍⬛

1/n Image Let’s do a SpaceMob thing and look at this from first principles.

A satellite has a field of view. FoV.

That Field of View projects a footprint on earth.

The footprint increases with angle of the field of view and increases with altitude.

2/ Image
Image
Nov 25, 2025 • 13 tweets • 5 min read
🚨 $ASTS IS INCREASING ITS PATENT MOAT ESP. ON DOW ORBITS 🚨THIS PATENT COVERS THE SIGNAL-PROCESSING METHODS — SELECTION COMBINING, DIVERSITY COMBINING, AND MIMO — THAT ENABLE RELIABLE DIRECT-TO-CELL CONNECTIVITY FROM LEO SATELLITES TO STANDARD HANDSETS.

1/ Image THE PROBLEM ADDRESSED: END USER DEVICES MAY RECEIVE MULTIPLE SATELLITE SIGNALS (MULTIPLE PATHS, SUB-ARRAYS, OR MULTI-SATELLITE LINKS) WITH DIFFERENT DELAYS, DOPPLER, AND SNRS.

THE PATENT SPECIFIES HOW TO CHOOSE AND COMBINE THESE SIGNALS TO MAXIMIZE LINK RELIABILITY.

2/
Aug 11, 2025 • 27 tweets • 7 min read
Quarterly report thread. $ASTS

Excellent initial impression.

August delivery of FM1 !

5 launches before Q1 -26

1.5Bn+ at hand

🧶🐈‍⬛

1/
stocktitan.net/news/ASTS/ast-… Signed two additional early-stage contracts for the U.S. Government end customer, bringing the total to eight contracts to date with the U.S. Government as an end customer.

This is huge.

The rate at which company adds DoD contracts is staggering. It’s not in analyst models.

2/
May 20, 2025 • 14 tweets • 7 min read
Old and new FM1 Mission overview.

Gone is ”technology pathfinder”

And gone os that it is enhanced ..”to support the higher throughput”.

It’s simply ”.. an enhanced satellite bus (controlsat)”

Now how to do that?

🧶🐈‍⬛ Image
Image Meet Aces 1 - 4 a technology pathfinder mission for DARPA Blackjack.

Notice modular design.

Piggy back payload.

Build your own satellite by adding modules.

This was the early vision on how to do golden dome / PWSA type satellites. Image
Image
Image
Image
Apr 11, 2025 • 6 tweets • 3 min read
🚨STARLINK DRAINS BATTERY 🚨

Why the Starlink 🪫 d2c earth moving cells are a really bad design choice can fill a book.

Carrying around an app that rapidly drains your battery in a disaster scenario isn’t optimal.

1/n I’d like to focus not on how these rapid-fire beam to beam handovers causes dropped texts. Not on how that type of beams cause more border interference. Etc.

But on battery.

Starlink 🪫 d2c does not like
AST 🔋SpaceMobile fix the beam onto you with adaptive beamforming.

2/ Image
Mar 21, 2025 • 4 tweets • 4 min read
🚨 $ASTS TO LAUNCH SATELLITE 🚨

🐈‍⬛ BREAKING NEWS AFTER CLOSE 🐈‍⬛

AST SPACEMOBILE TRADING ON NASDAQ AS $ASTS FILES NEW STA FILING WITH THE @FCC. ASKS TO LAUNCH HUGE SATELLITE.

ASKS OK BEFORE APRIL 21.

SATELLITE SLATED FOR LAUNCH IN Q2 THIS YEAR. TENTATIVE MAY LAUNCH.

🧶🐈‍⬛

/1
Image
Image As we assumed AST uses STA instrument for the first Block 2 satellite.

Which is to be launched by ISRO

The narrative. Link:

.

And snapshots.

2/n apps.fcc.gov/els/GetAtt.htm…Image
Image
Image
Image
Mar 8, 2025 • 15 tweets • 6 min read
🚨FCC WAIVER IMPLICATIONS🚨

📓DEEPDIVE DD EXPLAINED 👨🏼‍💻

Let’s start:

The way you can differentiate emmissions in space [where] and in time [when] and in strength [how much] you can also differentiate in the frequenzy domain [which channel].

That you transmit in.

🧶🐈‍⬛

1/n The transmissions are ”good signals” if they’re [when], [where], [as strong] and [which channel] combo that is needed to do the transmission that is sought for.

Another combo is ”a waste”.

But some other combos also do harm.
”Bad signal”

2/n
Feb 15, 2025 • 22 tweets • 11 min read
🚨SPACEMOBILE $ASTS FULL FCC GRANT FOR 🇺🇸 BLOCK 1 β-TESTS🚨

✅$ASTS REGULATORY READINESS NOW ON PAR WITH STARLINK D2C

✅$ASTS TECHNOLOGICAL READINEDS WAY BETTER,

⏳ WHICH IS ABOUT TO BE SHOWCASED 🎬🎥🍿

🧶🐈‍⬛

1/n Image
Image
Image
 As a ten tweet primer the competition in the form of Starlink regenerative architecture(green👇) is having severe problems with handovers.

As also can be seen AST is a different architecture altogether.

You’ll notice:

One single core.
gNBs (5G)

V/S

Two cores
eNB & gNB

2/n Image
Feb 8, 2025 • 23 tweets • 9 min read
Welcome to todays episode of

MAKING MICRONS

Prsenting is me, CatSE, to walk you through the wonders of advanced phased arrays.

Todays subheading is

COMPARISON.

We’ll relate micron generations to eachother and to others arrays.

🧶🐈‍⬛

Let’s start!

1/n Image The Block1 micron is a panel about 30 millimeters thick and 644 x 1,288
millimeters wide.

On one side antennas and on the other solar panels.

The antennas have a spacing that corresponds to a certain spectrum band.

The larger the spacing the lower the frequenzy.

2/n Image