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 : 573
SWA/WN - Southwest Airlines : 455
ASH/YV - Mesa Airlines : 183
UCA/C5 - CommutAir : 140
AAL/AA - American Airlines : 106
SKW/OO - SkyWest : 98
NKS/NK - Spirit Airlines : 96
DAL/DL - Delta Air Lines : 90
FFT/F9 - Frontier Airlines : 37
EJA/1I - NetJets : 34
AMX/AM - AeroMéxico : 26
FDX/FX - Federal Express : 26
ENY/MQ - Envoy Air : 19
VIV/VB - Aeroenlaces Nacionales : 18
UPS/5X - United Parcel Service : 18
VOI/Y4 - Volaris : 16
AAY/G4 - Allegiant Air : 15
SLI/5D - AeroMexico Connect : 14
ACA/AC - Air Canada : 14
JBU/B6 - JetBlue Airways : 13
SCX/SY - Sun Country Airlines : 12
LXJ/ - Flexjet : 11
ASA/AS - Alaska Airlines : 10
GTI/5Y - Atlas Air : 9
ATN/8C - Air Transport International : 8
JSX/XE - JSX : 8
WJA/WS - WestJet : 6
TAI/TA - Taca International Airlines : 6
JTL/ - Jet Linx Aviation : 6
EJM/ - Executive Jet Management : 5
ABX/GB - ABX Air : 4
CJT/W8 - Cargojet Airways : 4
DLH/LH - Lufthansa : 4
AFR/AF - Air France : 3
LET/ - Aerolineas Ejecutivas : 3
BAW/BA - British Airways : 3
CMP/CM - Copa Airlines : 3
UAE/EK - Emirates : 3
JIA/OH - PSA Airlines : 3
XSR/ - Executive AirShare : 3
FTH/ - Mountain Aviation : 3
ACW/ - SERVICIOS AEREOS ACROSS, S.A. DE C.V. : 3
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
XAA/ - Aeronautical Radio Inc : 2
CYO/ - Air Transport : 2
SCM/ - American Jet International : 2
CLX/CV - Cargolux : 2
EVA/BR - EVA Air : 2
KLM/KL - KLM Royal Dutch Airlines : 2
QTR/QR - Qatar Airways : 2
SIA/SQ - Singapore Airlines : 2
THY/TK - Turkish Airlines : 2
CWG/ - Wing Aviation : 2
FFL/ - ForeFlight : 2
TNO/ - Aerotransporte de Carga Union : 1
NGF/ - Angel Flight America : 1
VTM/ - Aeronaves TSM : 1
BYA/ - Berry Aviation : 1
CAL/CI - China Airlines : 1
CFG/DE - Condor Flugdienst : 1
EMD/ - Eaglemed (Ballard Aviation) : 1
FLC/ - FINFO Flight Inspection Aircraft : 1
DCM/ - FLTPLAN : 1
IBE/IB - Iberia Airlines : 1
KFS/ - Kalitta Charters : 1
GEC/LH - Lufthansa Cargo : 1
PAT/ - Department of the Army, Priority Air Transport : 1
QFA/QF - Qantas : 1
LBQ/ - Quest Diagnostics : 1
JUS/U7 - USA Jet Airlines : 1
XOJ/ - Xojet : 1
BOX/3S - Aerologic : 1
WAL/WL - Caribbean Sun Airlines dba World Atlantic Airlines : 1
CNS/ - Cobalt Air : 1
TWY/ - Sunset Aviation, LLC : 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.