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 Flight and plane information

Country summary

Total airframes: 2055
Unassigned icao range: 3
United States: 1907 92.8%
Mexico: 57 2.77%
United States Luftwaffe: 43 2.09%
Canada: 12 0.58%
United Kingdom: 4 0.19%
Germany: 3 0.15%
Netherlands: 3 0.15%
Qatar: 2 0.1%
Luxembourg: 2 0.1%
Ukraine: 2 0.1%
Unassigned (EUR / NAT regions): 2 0.1%
China: 2 0.1%
Japan: 2 0.1%
United Arab Emirates: 2 0.1%
Taiwan: 2 0.1%
Unassigned (AFI region): 1 0.05%
Spain: 1 0.05%
France: 1 0.05%
Turkey: 1 0.05%
Ireland: 1 0.05%
Malta: 1 0.05%
South Korea: 1 0.05%
Unassigned (NAM / PAC regions): 1 0.05%
Brazil: 1 0.05%

Airframe summary

Boeing : 555
B737 : 422
B767 : 35
B737-MAX : 32
B787 : 19
B777 : 15
B757 : 13
B717 : 9
B747 : 7
RC-135 : 2
C-17 Globemaster : 1
Airbus : 258
A319 : 76
A320 : 69
A321 : 68
A320-neo : 27
A300 : 8
A321-neo : 5
A350 : 2
A330 : 2
A340 : 1
Embraer : 240
ERJ-175 : 135
E-145XR : 44
E-145 : 21
Phenom : 20
E-190 : 10
E-135 : 8
E-170 : 2
Cessna : 202
Skyhawk-172 : 53
Citation Encore : 34
Skylane-182 : 32
Citation Soverign : 27
Citation-525 : 18
Citation Longitude : 13
Citation Bravo : 9
Caravan-208 : 4
Centurion-210 : 4
Cardinal-177 : 3
Stationair-206 : 1
Chancellor-414 : 1
Citation Mustang : 1
Cessna-150 : 1
Businessliner-195 : 1
Bombardier : 142
Challenger : 53
CRJ900 : 31
CRJ200 : 21
A220 : 18
CRJ700 : 15
Global Express : 4
PIC : 95
Skyhawk-172 : 53
Piper Archer : 37
Piper Arrow : 3
Citabria : 1
Businessliner-195 : 1
Beechcraft : 83
Bonanza : 23
200 Super King Air : 14
90 King Air : 11
Beechjet : 10
300 Super King Air : 9
Beechcraft : 8
Baron : 5
Travel Air : 3
Piper : 74
Piper Archer : 37
Piper : 14
Piper Malibu : 12
Piper Arrow : 3
Piper Lance : 3
Piper Super Cub : 3
Piper Seminole : 2
unknown : 60
other : 43
Hawker : 22
Mooney 20 : 7
MD-8x : 5
DC-9 : 4
Glider : 2
HondaJet : 2
Dornier328 : 1
Cirrus : 38
SR-22 : 23
SR-22T : 8
Cirrus Vision : 5
SR-20 : 2
Dassault : 36
Falcon : 17
Falcon2000 : 10
Falcon900 : 9
LearJet : 34
LearJet 45 : 14
LearJet 60 : 11
LearJet 35 : 5
LearJet : 2
LearJet 31 : 2
Gulfstream : 31
Gulfstream V : 14
Gulfstream IV : 8
Galaxy : 5
Gulfstream VI : 3
Gulfstream III : 1
military : 30
T-38 Talon : 18
TexanII : 9
RC-135 : 2
C-17 Globemaster : 1
helikopter : 28
EC-145 : 7
JetRanger : 6
H500 : 4
AS350 : 3
R44 : 3
Bell 50x : 1
R22 : 1
EC-135 : 1
S-76 : 1
Blackhawk : 1
cargo : 20
A300 : 8
MD-11 : 8
Ан-12 Cub : 2
DC-10 : 1
C-17 Globemaster : 1
Soviet : 2
Ан-12 Cub : 2

Airline flight summary

Total : 3077
Callsign is tail number: 663
Blockheads: 105
PIA: 0
Spionen: 6
Numerical: 0
Unidentified: 77
223 flights got close to the antenna.
NASA5 did this the most, 6 times.
N5279F flew nearby the longest for 16.6 minutes.
SWA3887 was closest to the antenna, 2595 ft away.
Busiest plane: N24128 an E45X flew 7 routes for UCA.
UAL/UA - United Airlines : 433
SWA/WN - Southwest Airlines : 330
ASH/YV - Mesa Airlines : 278
AAL/AA - American Airlines : 198
UCA/C5 - CommutAir : 160
SKW/OO - SkyWest : 142
DAL/DL - Delta Air Lines : 121
NKS/NK - Spirit Airlines : 71
ENY/MQ - Envoy Air : 69
JBU/B6 - JetBlue Airways : 40
FDX/FX - Federal Express : 38
EJA/1I - NetJets : 33
UPS/5X - United Parcel Service : 33
VIV/VB - Aeroenlaces Nacionales : 18
FFT/F9 - Frontier Airlines : 17
VOI/Y4 - Volaris : 17
VTM/ - Aeronaves TSM : 16
LXJ/ - Flexjet : 16
RPA/RW - Republic Airlines : 15
AMX/AM - AeroMéxico : 14
ATN/8C - Air Transport International : 12
SWQ/ - Swift Air (Interstate Equipment Leasing) : 12
CWG/ - Wing Aviation : 11
AAY/G4 - Allegiant Air : 10
AJT/M6 - Amerijet International : 8
SCX/SY - Sun Country Airlines : 8
SOO/9S - Southern Air : 8
JTL/ - Jet Linx Aviation : 7
JZA/QK - Air Canada Jazz : 6
DCM/ - FLTPLAN : 6
SLW/ - Salama Airlines Nigeria : 6
SLI/5D - AeroMexico Connect : 5
CJT/W8 - Cargojet Airways : 5
EJM/ - Executive Jet Management : 5
ANA/NH - All Nippon Airways : 4
ASA/AS - Alaska Airlines : 4
QTR/QR - Qatar Airways : 4
XOJ/ - Xojet : 4
JSX/XE - JSX : 4
FTH/ - Mountain Aviation : 4
EDG/ - Jet Edge : 4
CYO/ - Air Transport : 3
LET/ - Aerolineas Ejecutivas : 3
SCM/ - American Jet International : 3
BAW/BA - British Airways : 3
UAE/EK - Emirates : 3
KLM/KL - KLM Royal Dutch Airlines : 3
DLH/LH - Lufthansa : 3
PAT/ - Department of the Army, Priority Air Transport : 3
RAX/ - Royal Air Freight : 3
XSR/ - Executive AirShare : 3
DPJ/ - Wheels Up Private Jets : 3
ACW/ - SERVICIOS AEREOS ACROSS, S.A. DE C.V. : 3
CNV/ - US Navy Air Logistics Office : 3
AFR/AF - Air France : 2
ACA/AC - Air Canada : 2
TAA/ - Aeroservicios de La Costa : 2
BVN/ - Baron Aviation Services : 2
BYA/ - Berry Aviation : 2
CLX/CV - Cargolux : 2
EVA/BR - EVA Air : 2
CKS/K4 - Kalitta Air : 2
LBQ/ - Quest Diagnostics : 2
THY/TK - Turkish Airlines : 2
JUS/U7 - USA Jet Airlines : 2
GAJ/ - Wheels Up - Gama Aviation : 2
EDV/9E - Endeavor Air : 2
RDK/ - Memorial Hermann Hospital System : 2
CVK/ - CAVOK Air : 2
STV/ - Saturn Aviation : 2
AJI/ - Ameristar Jet Charter : 1
GTI/5Y - Atlas Air : 1
BMR/ - British Midland Regional : 1
BOE/ - Boeing : 1
CPA/CX - Cathay Pacific : 1
IBE/IB - Iberia Airlines : 1
KFS/ - Kalitta Charters : 1
KAL/KE - Korean Air : 1
GEC/LH - Lufthansa Cargo : 1
PKW/ - Sierra/Pak West Airlines : 1
WJA/WS - WestJet : 1
NCR/N8 - National Air Cargo : 1
FWR/ - Flight Aware : 1
WAL/WL - Caribbean Sun Airlines dba World Atlantic Airlines : 1
FFL/ - ForeFlight : 1
CAP/ - Civil Air Patrol : 1
CNS/ - Cobalt Air : 1
SIS/ - Scott Aviation, LLC : 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.