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: 1185
Unassigned icao range: 3

United States: 1073 90.55%
United States Luftwaffe: 59 4.98%
Mexico: 16 1.35%
Canada: 6 0.51%
Luxembourg: 4 0.34%
Netherlands: 3 0.25%
Russia: 2 0.17%
Unassigned (AFI region): 2 0.17%
Turkey: 2 0.17%
China: 2 0.17%
Unassigned (NAM / PAC regions): 2 0.17%
Germany: 1 0.08%
Unassigned (EUR / NAT regions): 1 0.08%
Unassigned (MID region): 1 0.08%
Unassigned (ASIA region): 1 0.08%
Saudi Arabia: 1 0.08%
South Korea: 1 0.08%
Philippines: 1 0.08%
Japan: 1 0.08%
United Arab Emirates: 1 0.08%
Unassigned (0xD reserved for future use): 1 0.08%
Unassigned (0xF reserved for future use): 1 0.08%

Airframe summary

Boeing : 258
B737 : 184
B767 : 29
B757 : 15
B777 : 9
B717 : 8
B747 : 7
B787 : 4
KC-135 : 1
P-8 Poseidon : 1
unknown : 136
Cessna : 135
Skyhawk-172 : 48
Citation Encore : 16
Citation-525 : 14
Citation Soverign : 14
Skylane-182 : 11
Citation Bravo : 9
Citation Longitude : 8
Caravan-208 : 5
Cessna-150 : 5
Stationair-206 : 3
Citation Mustang : 1
Skywagon-185 : 1
Airbus : 89
A319 : 44
A320 : 17
A300 : 13
A321 : 12
A320-neo : 3
Beechcraft : 75
Bonanza : 21
200 Super King Air : 16
90 King Air : 11
300 Super King Air : 11
Beechjet : 7
Baron : 4
Beechcraft : 3
Travel Air : 2
Embraer : 65
Phenom : 19
E-145 : 18
E-145XR : 11
E-135 : 10
E-170 : 3
E-190 : 2
ERJ-175 : 2
Piper : 62
Piper Archer : 32
Piper Malibu : 11
Piper : 10
Piper Arrow : 4
Piper Seminole : 3
Piper Lance : 2
military : 43
TexanII : 26
T-38 Talon : 13
KC-135 : 1
C-130 Hercules : 1
P-3 Orion : 1
P-8 Poseidon : 1
Bombardier : 41
Challenger : 18
CRJ900 : 11
CRJ700 : 5
A220 : 3
Global Express : 3
CRJ200 : 1
cargo : 24
A300 : 13
MD-11 : 5
DC-10 : 5
C-130 Hercules : 1
helikopter : 19
EC-145 : 7
JetRanger : 4
R44 : 3
H500 : 2
Bell 50x : 1
AS350 : 1
EC-135 : 1
other : 18
Hawker : 6
Mooney 20 : 5
Citabria : 2
Glider : 2
8KCAB : 1
deHavillandCanada : 1
P.68 Observer : 1
Dassault : 18
Falcon900 : 8
Falcon2000 : 7
Falcon : 3
LearJet : 17
LearJet 45 : 13
LearJet 60 : 2
LearJet 35 : 1
LearJet 31 : 1
Gulfstream : 14
Gulfstream IV : 7
Galaxy : 3
Gulfstream V : 3
Gulfstream VI : 1
Cirrus : 13
SR-22 : 7
SR-22T : 5
SR-20 : 1
NASA : 1
WB-57F Canberra : 1

Airline flight summary

Total : 1483
Callsign is tail number: 471
Blockheads: 69
Numerical: 2
Unidentified: 176
Spionen: 9
Busiest plane: 4D0112 an B748 flew 4 routes for CLX.
SWA/WN - Southwest Airlines : 130
ASH/YV - Mesa Airlines : 92
ASQ/EV - ExpressJet Airlines : 84
UAL/UA - United Airlines : 80
AAL/AA - American Airlines : 76
UPS/5X - United Parcel Service : 39
FDX/FX - Federal Express : 34
ENY/MQ - Envoy Air : 28
DAL/DL - Delta Air Lines : 22
SKW/OO - SkyWest : 19
EJA/1I - NetJets : 17
AAY/G4 - Allegiant Air : 13
GTI/5Y - Atlas Air : 12
FFT/F9 - Frontier Airlines : 10
LXJ/ - Flexjet : 9
CLX/CV - Cargolux : 8
BTQ/4B - Boutique Air (Priv) : 8
JBU/B6 - JetBlue Airways : 7
CKS/K4 - Kalitta Air : 6
RPA/RW - Republic Airlines : 6
NKS/NK - Spirit Airlines : 6
SCX/SY - Sun Country Airlines : 5
SWQ/ - Swift Air (Interstate Equipment Leasing) : 5
CWG/ - Wing Aviation : 5
ABX/GB - ABX Air : 4
CJT/W8 - Cargojet Airways : 4
KLM/KL - KLM Royal Dutch Airlines : 4
XSR/ - Executive AirShare : 4
LBQ/ - Quest Diagnostics : 3
SWG/WG - Sunwing Airlines : 3
THY/TK - Turkish Airlines : 3
XOJ/ - Xojet : 3
SLI/5D - AeroMexico Connect : 2
TNO/ - Aerotransporte de Carga Union : 2
ACA/AC - Air Canada : 2
ASA/AS - Alaska Airlines : 2
CCA/CA - Air China International : 2
LET/ - Aerolineas Ejecutivas : 2
BVN/ - Baron Aviation Services : 2
UAE/EK - Emirates : 2
DCM/ - FLTPLAN : 2
VOI/Y4 - Volaris : 2
EDV/9E - Endeavor Air : 2
AMX/AM - AeroMéxico : 1
RCH/MC - Air Mobility Command : 1
CPA/CX - Cathay Pacific : 1
KAL/KE - Korean Air : 1
DLH/LH - Lufthansa : 1
OAE/OY - Omni Air International : 1
JIA/OH - PSA Airlines : 1
PAL/PR - Philippine Airlines : 1
CAP/C2 - CanXplorer : 1
GAJ/ - Wheels Up - Gama Aviation : 1
JTL/ - Jet Linx Aviation : 1
RDK/ - Memorial Hermann Hospital System : 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.