ADS-B Mode-S

My tracking of nearby ADSB-out aircraft using my local AWACS server.

Automatic dependent surveillance-broadcast - Mode-S

On January 1, 2020, Federal Regulation 14 CFR § 91.225 requiring ADSB-out to transmit their position information to ATC and other aircraft takes effect. This applies to all aircraft above 10,000 MSL, inside Class A, B, and C airspace, and within 30 NM of a Mode-C airport to the surface. Since the transmission happens at 1090MHz, is vertically polarized, and is receivable within a line of sight, ground stations can pick up signals from aircraft hundreds of nautical miles away flying at high altitude!

Unscientific deployment observation

Being within the KIAH Mode-C ring, all planes are required to have a squawkable transponder for the primary ATC radar. Unfortunately, most of these planes are invisible without the 1090MHz transponder which allows for a MLAT(multi-lateration) calculation with multiple base stations. Sometimes an ADSB-IN aircraft is flying nearby which will activate a ADSB-R (rebroadcast). The traffic within several miles and within 5000' of the aircraft will be rebroadcast meaning that my AWACS system can now see the ground traffic at major airports as well as random signatures for the remainder of the transponder only flights.

Yesterday's Stats

Yesterday's Flights Last 24h range

Country summary

Total airframes: 1308
Unassigned icao range: 3
United States: 1198 91.59%
United States Luftwaffe: 57 4.36%
Mexico: 22 1.68%
Canada: 3 0.23%
Unassigned (AFI region): 2 0.15%
Italy: 2 0.15%
France: 2 0.15%
Netherlands: 2 0.15%
Unassigned (EUR / NAT regions): 2 0.15%
Vietnam: 2 0.15%
Taiwan: 2 0.15%
Unassigned (NAM / PAC regions): 2 0.15%
Egypt: 1 0.08%
Qatar: 1 0.08%
Russia: 1 0.08%
United Kingdom: 1 0.08%
Greece: 1 0.08%
Luxembourg: 1 0.08%
Ukraine: 1 0.08%
Unassigned (MID region): 1 0.08%
Australia: 1 0.08%
United Arab Emirates: 1 0.08%

Airframe summary

Boeing : 360
B737 : 285
B767 : 30
B757 : 15
B777 : 10
B717 : 9
B787 : 6
B747 : 4
P-8 Poseidon : 1
Airbus : 143
A320 : 45
A321 : 41
A319 : 35
A320-neo : 13
A300 : 9
Cessna : 142
Skyhawk-172 : 45
Skylane-182 : 20
Citation Encore : 18
Citation Soverign : 17
Citation-525 : 12
Caravan-208 : 7
Citation Longitude : 7
Citation Bravo : 6
Cardinal-177 : 5
Stationair-206 : 2
Centurion-208 : 2
Cessna-150 : 1
Embraer : 132
ERJ-175 : 88
E-145 : 20
Phenom : 10
E-145XR : 8
E-135 : 6
PIC : 88
Skyhawk-172 : 45
Piper Archer : 37
Piper Arrow : 5
Citabria : 1
Beechcraft : 66
Bonanza : 18
300 Super King Air : 12
Beechjet : 11
90 King Air : 8
200 Super King Air : 8
Beechcraft : 6
Baron : 2
Travel Air : 1
Piper : 66
Piper Archer : 37
Piper Malibu : 13
Piper : 10
Piper Arrow : 5
Piper Seminole : 1
unknown : 65
Bombardier : 55
Challenger : 22
CRJ900 : 16
A220 : 6
CRJ700 : 6
CRJ200 : 4
Global Express : 1
military : 35
TexanII : 21
T-38 Talon : 9
C-5 Galaxy : 3
Reaper Drone : 1
P-8 Poseidon : 1
LearJet : 27
LearJet 45 : 13
LearJet 60 : 8
LearJet 31 : 4
LearJet 35 : 1
LearJet : 1
other : 24
Hawker : 8
Mooney 20 : 7
Glider : 7
MD-8x : 1
DC-9 : 1
helikopter : 24
EC-145 : 7
JetRanger : 4
H500 : 3
Blackhawk : 3
AS350 : 2
R44 : 2
EC-135 : 2
Bell 50x : 1
cargo : 22
A300 : 9
MD-11 : 6
DC-10 : 4
C-5 Galaxy : 3
Gulfstream : 21
Gulfstream IV : 9
Gulfstream V : 6
Galaxy : 3
Gulfstream VI : 2
Gulfstream III : 1
Dassault : 16
Falcon : 11
Falcon900 : 3
Falcon2000 : 2
Cirrus : 14
SR-22 : 9
Cirrus Vision : 2
SR-22T : 2
SR-20 : 1

Airline flight summary

Total : 1776
Callsign is tail number: 423
Blockheads: 60
Spionen: 8
Numerical: 2
Unidentified: 169
141 flights got close to the antenna.
N956TX did this the most, 11 times.
N956TX flew nearby the longest for 32.9 minutes.
N3108X was closest to the antenna, 868 ft away.
Busiest plane: N15912 an E145 flew 7 routes for ASQ.
SWA/WN - Southwest Airlines : 233
UAL/UA - United Airlines : 185
ASH/YV - Mesa Airlines : 144
AAL/AA - American Airlines : 92
ASQ/EV - ExpressJet Airlines : 88
NKS/NK - Spirit Airlines : 62
SKW/OO - SkyWest : 52
DAL/DL - Delta Air Lines : 41
UPS/5X - United Parcel Service : 34
FDX/FX - Federal Express : 32
ENY/MQ - Envoy Air : 29
EJA/1I - NetJets : 18
GTI/5Y - Atlas Air : 17
VOI/Y4 - Volaris : 11
AMX/AM - AeroMéxico : 10
JBU/B6 - JetBlue Airways : 10
LXJ/ - Flexjet : 8
BTQ/4B - Boutique Air (Priv) : 7
RCH/MC - Air Mobility Command : 5
FFT/F9 - Frontier Airlines : 5
XOJ/ - Xojet : 5
CJT/W8 - Cargojet Airways : 4
EJM/ - Executive Jet Management : 4
CKS/K4 - Kalitta Air : 4
GAJ/ - Wheels Up - Gama Aviation : 4
SLI/5D - AeroMexico Connect : 3
VIV/VB - Aeroenlaces Nacionales : 3
ASA/AS - Alaska Airlines : 3
SWQ/ - Swift Air (Interstate Equipment Leasing) : 3
CWG/ - Wing Aviation : 3
ACA/AC - Air Canada : 2
BVN/ - Baron Aviation Services : 2
EVA/BR - EVA Air : 2
SCX/SY - Sun Country Airlines : 2
SKV/RS - Sky Regional Airlines : 2
NCR/N8 - National Air Cargo : 2
JTL/ - Jet Linx Aviation : 2
RDK/ - Memorial Hermann Hospital System : 2
AAY/G4 - Allegiant Air : 1
ABX/GB - ABX Air : 1
AFR/AF - Air France : 1
AMF/A8 - Ameriflight : 1
VTM/ - Aeronaves TSM : 1
BYA/ - Berry Aviation : 1
CLX/CV - Cargolux : 1
EMD/ - Eaglemed (Ballard Aviation) : 1
DCM/ - FLTPLAN : 1
KLM/KL - KLM Royal Dutch Airlines : 1
OAE/OY - Omni Air International : 1
LBQ/ - Quest Diagnostics : 1
RPA/RW - Republic Airlines : 1
HVN/VN - Vietnam Airlines : 1
XSR/ - Executive AirShare : 1
CAP/ - Civil Air Patrol : 1

You only need a few things to get started:

My long range setup is using a Raspberry Pi Zero and a ProStickPlus. PiZero + ProStickPlus

To improve the setup:

ADSB-in

Since it's more expensive to add ADSB-in capability and not required by the FAA many planes don't have this. Fortunately, using almost the same setup as my home AWACS system Stratux can supplement your electronic flight bag. I'm currently using Avare with the external i/o plugin to connect to the homebuilt stratux.

References and Software

gr-air-modes - ADS-B receiving software.
wikipedia ADS-B
rtl-sdr ads-b article
antirez dump1090
satsignal pi-1090
asd-b.ca
mutability mlat-server
alkissack dump1090
British Airways used this in a pretty neat marketing campaign #lookup.