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: 1626
Unassigned icao range: 5
United States: 1540 94.71%
Mexico: 40 2.46%
Canada: 9 0.55%
United States Luftwaffe: 6 0.37%
Qatar: 3 0.18%
Germany: 3 0.18%
United Kingdom: 3 0.18%
Netherlands: 2 0.12%
Turkey: 2 0.12%
Luxembourg: 2 0.12%
Panama: 1 0.06%
Russia: 1 0.06%
Unassigned (AFI region): 1 0.06%
Spain: 1 0.06%
Isle of Man: 1 0.06%
Czech Republic: 1 0.06%
Ukraine: 1 0.06%
Unassigned (EUR / NAT regions): 1 0.06%
Unassigned (MID region): 1 0.06%
Japan: 1 0.06%
United Arab Emirates: 1 0.06%
Taiwan: 1 0.06%
Unassigned (0xF reserved for future use): 1 0.06%

Airframe summary

Boeing : 417
B737 : 322
B767 : 28
B757 : 22
B787 : 19
B777 : 13
B717 : 8
B747 : 4
B727 : 1
Airbus : 206
A321 : 68
A320 : 54
A319 : 45
A320-neo : 27
A321-neo : 4
A330 : 3
A300 : 3
A350 : 2
Embraer : 205
ERJ-175 : 123
E-145XR : 30
Phenom : 23
E-145 : 12
E-135 : 10
E-190 : 6
E-170 : 1
Cessna : 195
Skyhawk-172 : 47
Citation Soverign : 31
Citation-525 : 26
Citation Encore : 26
Skylane-182 : 22
Citation Longitude : 16
Citation Bravo : 9
Caravan-208 : 4
Citation Mustang : 4
Cardinal-177 : 3
Skywagon-185 : 2
Stationair-206 : 2
Chancellor-414 : 1
Cessna-152 : 1
Cessna-150 : 1
Bombardier : 87
Challenger : 27
CRJ900 : 25
CRJ700 : 13
CRJ200 : 11
Global Express : 6
A220 : 5
PIC : 83
Skyhawk-172 : 47
Piper Archer : 31
Citabria : 2
Piper Arrow : 2
Cessna-152 : 1
unknown : 79
Beechcraft : 76
Bonanza : 28
300 Super King Air : 12
200 Super King Air : 12
Beechcraft : 10
90 King Air : 5
Beechjet : 4
Baron : 4
Travel Air : 1
Piper : 62
Piper Archer : 31
Piper : 13
Piper Malibu : 11
Piper Arrow : 2
Piper Super Cub : 2
Piper Seminole : 2
Piper Lance : 1
other : 29
Hawker : 16
Mooney 20 : 7
MD-8x : 3
DC-9 : 2
HondaJet : 1
Gulfstream : 28
Gulfstream V : 13
Gulfstream IV : 9
Gulfstream VI : 3
Galaxy : 3
Dassault : 23
Falcon2000 : 11
Falcon900 : 10
Falcon : 2
helikopter : 21
EC-145 : 7
JetRanger : 4
R44 : 2
H500 : 2
Bell 50x : 1
EC-135 : 1
S-58 : 1
AS350 : 1
R22 : 1
S-92 : 1
LearJet : 20
LearJet 45 : 13
LearJet 60 : 4
LearJet 35 : 2
LearJet 31 : 1
Cirrus : 20
SR-22 : 10
SR-22T : 4
Cirrus Vision : 3
SR-20 : 3
cargo : 10
A300 : 3
MD-11 : 3
DC-10 : 3
Ан-12 Cub : 1
military : 5
TexanII : 4
T-38 Talon : 1
Soviet : 1
Ан-12 Cub : 1
warbird : 1
T-6 Texan : 1

Airline flight summary

Total : 2251
Callsign is tail number: 526
Blockheads: 78
PIA: 1
Spionen: 1
Numerical: 3
Unidentified: 156
191 flights got close to the antenna.
N737DP did this the most, 21 times.
N737DP flew nearby the longest for 38.8 minutes.
N2374F was closest to the antenna, 961 ft away.
Busiest plane: N11106 an E45X flew 6 routes for UCA.
UAL/UA - United Airlines : 260
SWA/WN - Southwest Airlines : 220
ASH/YV - Mesa Airlines : 184
AAL/AA - American Airlines : 143
UCA/C5 - CommutAir : 116
SKW/OO - SkyWest : 90
DAL/DL - Delta Air Lines : 77
NKS/NK - Spirit Airlines : 59
ENY/MQ - Envoy Air : 52
EJA/1I - NetJets : 37
JBU/B6 - JetBlue Airways : 21
VOI/Y4 - Volaris : 21
UPS/5X - United Parcel Service : 17
FDX/FX - Federal Express : 16
ASA/AS - Alaska Airlines : 13
GTI/5Y - Atlas Air : 13
LXJ/ - Flexjet : 13
AMX/AM - AeroMéxico : 11
FFT/F9 - Frontier Airlines : 11
RPA/RW - Republic Airlines : 11
VIV/VB - Aeroenlaces Nacionales : 9
LET/ - Aerolineas Ejecutivas : 7
SCX/SY - Sun Country Airlines : 7
CJT/W8 - Cargojet Airways : 5
QTR/QR - Qatar Airways : 5
XOJ/ - Xojet : 5
EDV/9E - Endeavor Air : 5
CWG/ - Wing Aviation : 5
SLI/5D - AeroMexico Connect : 4
CLX/CV - Cargolux : 4
EJM/ - Executive Jet Management : 4
ABX/GB - ABX Air : 3
VTM/ - Aeronaves TSM : 3
KLM/KL - KLM Royal Dutch Airlines : 3
DLH/LH - Lufthansa : 3
THY/TK - Turkish Airlines : 3
SKV/RS - Sky Regional Airlines : 3
GAJ/ - Wheels Up - Gama Aviation : 3
JTL/ - Jet Linx Aviation : 3
AAY/G4 - Allegiant Air : 2
AJT/M6 - Amerijet International : 2
ANA/NH - All Nippon Airways : 2
LBQ/ - Quest Diagnostics : 2
SWQ/ - Swift Air (Interstate Equipment Leasing) : 2
JUS/U7 - USA Jet Airlines : 2
XSR/ - Executive AirShare : 2
RDK/ - Memorial Hermann Hospital System : 2
FFL/ - ForeFlight : 2
AMF/A8 - Ameriflight : 1
ACA/AC - Air Canada : 1
ABW/RU - AirBridge Cargo : 1
BAW/BA - British Airways : 1
BVN/ - Baron Aviation Services : 1
CMP/CM - Copa Airlines : 1
UAE/EK - Emirates : 1
DCM/ - FLTPLAN : 1
FLT/B5 - Flightline : 1
IBE/IB - Iberia Airlines : 1
KFS/ - Kalitta Charters : 1
GEC/LH - Lufthansa Cargo : 1
YEL/YE - Yellowtail : 1
FWK/ - Flightworks : 1
SBE/ - World Class Aviation : 1
ASP/SP - Aspen Airways : 1
FWR/ - Flight Aware : 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.