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 : 614
SWA/WN - Southwest Airlines : 455
AAL/AA - American Airlines : 197
ASH/YV - Mesa Airlines : 183
SKW/OO - SkyWest : 130
UCA/C5 - CommutAir : 124
DAL/DL - Delta Air Lines : 121
NKS/NK - Spirit Airlines : 71
ENY/MQ - Envoy Air : 39
EJA/1I - NetJets : 37
UPS/5X - United Parcel Service : 28
FDX/FX - Federal Express : 27
AMX/AM - AeroMéxico : 25
FFT/F9 - Frontier Airlines : 22
VOI/Y4 - Volaris : 22
VIV/VB - Aeroenlaces Nacionales : 17
SLI/5D - AeroMexico Connect : 14
ASA/AS - Alaska Airlines : 14
ACA/AC - Air Canada : 12
ATN/8C - Air Transport International : 11
LXJ/ - Flexjet : 11
JBU/B6 - JetBlue Airways : 11
BAW/BA - British Airways : 8
TAI/TA - Taca International Airlines : 8
VTM/ - Aeronaves TSM : 7
CJT/W8 - Cargojet Airways : 7
SCX/SY - Sun Country Airlines : 7
WJA/WS - WestJet : 6
JSX/XE - JSX : 5
AAY/G4 - Allegiant Air : 4
SCM/ - American Jet International : 4
HAL/HA - Hawaiian Airlines : 4
THY/TK - Turkish Airlines : 4
JTL/ - Jet Linx Aviation : 4
CNS/ - Cobalt Air : 4
ABX/GB - ABX Air : 3
AFR/AF - Air France : 3
GTI/5Y - Atlas Air : 3
KLM/KL - KLM Royal Dutch Airlines : 3
DLH/LH - Lufthansa : 3
EDV/9E - Endeavor Air : 3
CWG/ - Wing Aviation : 3
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
CYO/ - Air Transport : 2
LET/ - Aerolineas Ejecutivas : 2
EVA/BR - EVA Air : 2
UAE/EK - Emirates : 2
EJM/ - Executive Jet Management : 2
DCM/ - FLTPLAN : 2
IBE/IB - Iberia Airlines : 2
QTR/QR - Qatar Airways : 2
CAP/ - Civil Air Patrol : 2
ARF/GV - Aero Flight : 1
CMP/CM - Copa Airlines : 1
EAL/EA - European Air Express : 1
VTS/ - Everts Air Alaska/Everts Air Cargo : 1
GLF/ - Gulfstream Aerospace : 1
CKS/K4 - Kalitta Air : 1
PKW/ - Sierra/Pak West Airlines : 1
PAT/ - Department of the Army, Priority Air Transport : 1
LBQ/ - Quest Diagnostics : 1
JUS/U7 - USA Jet Airlines : 1
YEL/YE - Yellowtail : 1
XSR/ - Executive AirShare : 1
JAS/ - Jet Aviation Flight Services : 1
FFL/ - ForeFlight : 1
TWY/ - Sunset Aviation, LLC : 1
ACW/ - SERVICIOS AEREOS ACROSS, S.A. DE C.V. : 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.