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 : 503
SWA/WN - Southwest Airlines : 436
AAL/AA - American Airlines : 268
UCA/C5 - CommutAir : 145
ASH/YV - Mesa Airlines : 128
DAL/DL - Delta Air Lines : 109
SKW/OO - SkyWest : 85
NKS/NK - Spirit Airlines : 68
ENY/MQ - Envoy Air : 55
FDX/FX - Federal Express : 42
EJA/1I - NetJets : 37
UPS/5X - United Parcel Service : 34
JBU/B6 - JetBlue Airways : 28
FFT/F9 - Frontier Airlines : 25
VOI/Y4 - Volaris : 25
AMX/AM - AeroMéxico : 19
ATN/8C - Air Transport International : 17
VIV/VB - Aeroenlaces Nacionales : 15
VTM/ - Aeronaves TSM : 13
GTI/5Y - Atlas Air : 12
JZA/QK - Air Canada Jazz : 12
JSX/XE - JSX : 11
DCM/ - FLTPLAN : 8
SLI/5D - AeroMexico Connect : 7
ASA/AS - Alaska Airlines : 7
LXJ/ - Flexjet : 6
SWQ/ - Swift Air (Interstate Equipment Leasing) : 6
RPA/RW - Republic Airlines : 5
AJT/M6 - Amerijet International : 4
ANA/NH - All Nippon Airways : 4
CKS/K4 - Kalitta Air : 4
DLH/LH - Lufthansa : 4
TAI/TA - Taca International Airlines : 4
AFR/AF - Air France : 3
LET/ - Aerolineas Ejecutivas : 3
BAW/BA - British Airways : 3
BYA/ - Berry Aviation : 3
CJT/W8 - Cargojet Airways : 3
KLM/KL - KLM Royal Dutch Airlines : 3
RAX/ - Royal Air Freight : 3
GAJ/ - Wheels Up - Gama Aviation : 3
CWG/ - Wing Aviation : 3
WAL/WL - Caribbean Sun Airlines dba World Atlantic Airlines : 3
FTH/ - Mountain Aviation : 3
AAY/G4 - Allegiant Air : 2
ACA/AC - Air Canada : 2
BVN/ - Baron Aviation Services : 2
UAE/EK - Emirates : 2
EAL/EA - European Air Express : 2
EJM/ - Executive Jet Management : 2
GLF/ - Gulfstream Aerospace : 2
PAT/ - Department of the Army, Priority Air Transport : 2
QTR/QR - Qatar Airways : 2
SIA/SQ - Singapore Airlines : 2
THY/TK - Turkish Airlines : 2
XOJ/ - Xojet : 2
JTL/ - Jet Linx Aviation : 2
TWY/ - Sunset Aviation, LLC : 2
ABX/GB - ABX Air : 1
AJI/ - Ameristar Jet Charter : 1
AMF/A8 - Ameriflight : 1
CYO/ - Air Transport : 1
TAA/ - Aeroservicios de La Costa : 1
CMP/CM - Copa Airlines : 1
EVA/BR - EVA Air : 1
ECU/ - Ecuavia : 1
KFS/ - Kalitta Charters : 1
MAA/M7 - MasAir : 1
OAE/OY - Omni Air International : 1
JIA/OH - PSA Airlines : 1
LBQ/ - Quest Diagnostics : 1
SCX/SY - Sun Country Airlines : 1
SWG/WG - Sunwing Airlines : 1
JUS/U7 - USA Jet Airlines : 1
USC/ - US Check Airlines : 1
XSR/ - Executive AirShare : 1
JAS/ - Jet Aviation Flight Services : 1
FWR/ - Flight Aware : 1
CAP/ - Civil Air Patrol : 1
DPJ/ - Wheels Up Private Jets : 1
CNS/ - Cobalt Air : 1
EDG/ - Jet Edge : 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.