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: 1712
Unassigned icao range: 5
United States: 1543 90.13%
United States Luftwaffe: 70 4.09%
Mexico: 55 3.21%
Canada: 6 0.35%
Japan: 4 0.23%
Qatar: 3 0.18%
United Kingdom: 3 0.18%
Germany: 2 0.12%
Netherlands: 2 0.12%
Turkey: 2 0.12%
Unassigned (EUR / NAT regions): 2 0.12%
Unassigned (NAM / PAC regions): 2 0.12%
Algeria: 1 0.06%
Russia: 1 0.06%
Unassigned (AFI region): 1 0.06%
France: 1 0.06%
Belgium: 1 0.06%
Luxembourg: 1 0.06%
Ukraine: 1 0.06%
Unassigned (MID region): 1 0.06%
South Korea: 1 0.06%
Vietnam: 1 0.06%
Bahrain: 1 0.06%
United Arab Emirates: 1 0.06%
Taiwan: 1 0.06%
Unassigned (0xB reserved for future use): 1 0.06%

Airframe summary

Boeing : 440
B737 : 315
B767 : 36
B757 : 29
B787 : 19
B777 : 17
B737-MAX : 10
B717 : 8
B747 : 2
B727 : 2
C-17 Globemaster : 2
Embraer : 216
ERJ-175 : 130
E-145XR : 32
Phenom : 25
E-145 : 15
E-135 : 8
E-190 : 3
E-170 : 3
Airbus : 197
A321 : 72
A320 : 61
A319 : 39
A320-neo : 11
A300 : 7
A330 : 3
A350 : 2
A321-neo : 2
Cessna : 166
Skyhawk-172 : 47
Citation Encore : 24
Citation Soverign : 23
Skylane-182 : 19
Citation-525 : 15
Citation Bravo : 12
Citation Longitude : 12
Centurion-210 : 4
Caravan-208 : 4
Citation Mustang : 2
Cessna-150 : 2
Chancellor-414 : 1
Cardinal-177 : 1
Bombardier : 111
Challenger : 43
CRJ900 : 31
CRJ200 : 14
CRJ700 : 12
A220 : 7
Global Express : 4
Beechcraft : 76
300 Super King Air : 16
90 King Air : 14
200 Super King Air : 13
Bonanza : 12
Beechjet : 11
Beechcraft : 7
Baron : 2
Travel Air : 1
PIC : 70
Skyhawk-172 : 47
Piper Archer : 21
Piper Arrow : 2
unknown : 66
other : 42
Hawker : 25
Mooney 20 : 10
MD-8x : 3
DC-9 : 3
deHavillandCanada : 1
military : 41
TexanII : 18
T-38 Talon : 16
C-130 Hercules : 2
C-17 Globemaster : 2
C-5 Galaxy : 1
F-15 Eagle : 1
C-130J Hercules : 1
Piper : 40
Piper Archer : 21
Piper Malibu : 9
Piper : 4
Piper Seminole : 2
Piper Arrow : 2
Piper Lance : 1
Piper Super Cub : 1
Dassault : 36
Falcon : 19
Falcon2000 : 10
Falcon900 : 7
LearJet : 35
LearJet 45 : 19
LearJet 60 : 10
LearJet : 3
LearJet 35 : 2
LearJet 31 : 1
Gulfstream : 29
Gulfstream IV : 12
Gulfstream V : 11
Galaxy : 3
Gulfstream VI : 3
helikopter : 25
EC-145 : 7
JetRanger : 4
AS350 : 2
R44 : 2
Chinook : 2
Blackhawk : 2
Bell 50x : 1
R22 : 1
EC-135 : 1
H500 : 1
S-76 : 1
S-92 : 1
cargo : 23
A300 : 7
MD-11 : 7
DC-10 : 2
C-130 Hercules : 2
C-17 Globemaster : 2
Ан-12 Cub : 1
C-5 Galaxy : 1
C-130J Hercules : 1
Cirrus : 20
SR-22 : 11
SR-22T : 4
SR-20 : 3
Cirrus Vision : 2
Soviet : 1
Ан-12 Cub : 1

Airline flight summary

Total : 2390
Callsign is tail number: 474
Blockheads: 78
PIA: 0
Spionen: 6
Numerical: 5
Unidentified: 237
187 flights got close to the antenna.
N5284F did this the most, 5 times.
N5284F flew nearby the longest for 22.1 minutes.
N308TC was closest to the antenna, 1274 ft away.
Busiest plane: N11106 an E45X flew 6 routes for UCA.
UAL/UA - United Airlines : 262
ASH/YV - Mesa Airlines : 223
SWA/WN - Southwest Airlines : 214
AAL/AA - American Airlines : 141
UCA/C5 - CommutAir : 134
SKW/OO - SkyWest : 107
DAL/DL - Delta Air Lines : 73
ENY/MQ - Envoy Air : 55
NKS/NK - Spirit Airlines : 49
FDX/FX - Federal Express : 37
UPS/5X - United Parcel Service : 36
EJA/1I - NetJets : 32
LXJ/ - Flexjet : 17
JBU/B6 - JetBlue Airways : 16
RPA/RW - Republic Airlines : 12
ASA/AS - Alaska Airlines : 11
VTM/ - Aeronaves TSM : 11
SWQ/ - Swift Air (Interstate Equipment Leasing) : 10
GTI/5Y - Atlas Air : 9
LET/ - Aerolineas Ejecutivas : 9
SCX/SY - Sun Country Airlines : 9
VOI/Y4 - Volaris : 9
XOJ/ - Xojet : 8
CJT/W8 - Cargojet Airways : 7
EDV/9E - Endeavor Air : 7
FFT/F9 - Frontier Airlines : 6
GAJ/ - Wheels Up - Gama Aviation : 6
CWG/ - Wing Aviation : 6
AJI/ - Ameristar Jet Charter : 5
BYA/ - Berry Aviation : 5
QTR/QR - Qatar Airways : 5
JTL/ - Jet Linx Aviation : 5
SLI/5D - AeroMexico Connect : 4
ANA/NH - All Nippon Airways : 4
VIV/VB - Aeroenlaces Nacionales : 4
KLM/KL - KLM Royal Dutch Airlines : 4
CKS/K4 - Kalitta Air : 4
THY/TK - Turkish Airlines : 4
AMX/AM - AeroMéxico : 3
LBQ/ - Quest Diagnostics : 3
JUS/U7 - USA Jet Airlines : 3
ABX/GB - ABX Air : 2
AFR/AF - Air France : 2
AJT/M6 - Amerijet International : 2
TNO/ - Aerotransporte de Carga Union : 2
RCH/MC - Air Mobility Command : 2
BAW/BA - British Airways : 2
BVN/ - Baron Aviation Services : 2
UAE/EK - Emirates : 2
EJM/ - Executive Jet Management : 2
RDK/ - Memorial Hermann Hospital System : 2
FFL/ - ForeFlight : 2
CLX/CV - Cargolux : 1
COM/OH - Comair : 1
EVA/BR - EVA Air : 1
FLC/ - FINFO Flight Inspection Aircraft : 1
DCM/ - FLTPLAN : 1
GLF/ - Gulfstream Aerospace : 1
JAF/JF - Jetairfly : 1
KAL/KE - Korean Air : 1
GEC/LH - Lufthansa Cargo : 1
PKW/ - Sierra/Pak West Airlines : 1
EGS/ - Eagles Airlines : 1
YEL/YE - Yellowtail : 1
XSR/ - Executive AirShare : 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.