My tracking of nearby ADSB-out aircraft using my local AWACS server.
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.
UAL/UA - United Airlines : 566
SWA/WN - Southwest Airlines : 447
AAL/AA - American Airlines : 289
ASH/YV - Mesa Airlines : 160
DAL/DL - Delta Air Lines : 138
NKS/NK - Spirit Airlines : 100
UCA/C5 - CommutAir : 88
SKW/OO - SkyWest : 82
ENY/MQ - Envoy Air : 73
JBU/B6 - JetBlue Airways : 46
EJA/1I - NetJets : 43
FFT/F9 - Frontier Airlines : 43
VOI/Y4 - Volaris : 25
AMX/AM - AeroMéxico : 18
VIV/VB - Aeroenlaces Nacionales : 16
AAY/G4 - Allegiant Air : 15
ASA/AS - Alaska Airlines : 15
ATN/8C - Air Transport International : 15
UPS/5X - United Parcel Service : 15
LXJ/ - Flexjet : 14
FDX/FX - Federal Express : 14
ACA/AC - Air Canada : 13
JSX/XE - JSX : 12
WJA/WS - WestJet : 11
SWQ/ - Swift Air (Interstate Equipment Leasing) : 10
SCX/SY - Sun Country Airlines : 8
VTM/ - Aeronaves TSM : 7
CJT/W8 - Cargojet Airways : 7
EDG/ - Jet Edge : 7
JZA/QK - Air Canada Jazz : 6
JUS/U7 - USA Jet Airlines : 6
XSR/ - Executive AirShare : 6
GTI/5Y - Atlas Air : 5
EJM/ - Executive Jet Management : 5
ABX/GB - ABX Air : 4
AFR/AF - Air France : 4
SLI/5D - AeroMexico Connect : 4
SCM/ - American Jet International : 4
BAW/BA - British Airways : 4
DCM/ - FLTPLAN : 4
KLM/KL - KLM Royal Dutch Airlines : 4
JIA/OH - PSA Airlines : 4
RPA/RW - Republic Airlines : 4
RAX/ - Royal Air Freight : 4
SWG/WG - Sunwing Airlines : 4
THY/TK - Turkish Airlines : 4
GAJ/ - Wheels Up - Gama Aviation : 4
TAI/TA - Taca International Airlines : 4
TWY/ - Sunset Aviation, LLC : 4
AJT/M6 - Amerijet International : 3
QTR/QR - Qatar Airways : 3
XOJ/ - Xojet : 3
EDV/9E - Endeavor Air : 3
CWG/ - Wing Aviation : 3
JTL/ - Jet Linx Aviation : 3
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
CYO/ - Air Transport : 2
LET/ - Aerolineas Ejecutivas : 2
TSC/TS - Air Transat : 2
EVA/BR - EVA Air : 2
UAE/EK - Emirates : 2
VTS/ - Everts Air Alaska/Everts Air Cargo : 2
KFS/ - Kalitta Charters : 2
DLH/LH - Lufthansa : 2
GEC/LH - Lufthansa Cargo : 2
LBQ/ - Quest Diagnostics : 2
VIR/VS - Virgin Atlantic Airways : 2
WSW/WO - Swoop : 2
SNC/2Q - Air Cargo Carriers : 1
AJI/ - Ameristar Jet Charter : 1
AMF/A8 - Ameriflight : 1
TAA/ - Aeroservicios de La Costa : 1
BYA/ - Berry Aviation : 1
CLX/CV - Cargolux : 1
CMP/CM - Copa Airlines : 1
GLF/ - Gulfstream Aerospace : 1
PAT/ - Department of the Army, Priority Air Transport : 1
YEL/YE - Yellowtail : 1
RDK/ - Memorial Hermann Hospital System : 1
CAP/ - Civil Air Patrol : 1
FTH/ - Mountain Aviation : 1
STV/ - Saturn Aviation : 1
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.