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 : 534
SWA/WN - Southwest Airlines : 387
AAL/AA - American Airlines : 156
ASH/YV - Mesa Airlines : 152
SKW/OO - SkyWest : 111
UCA/C5 - CommutAir : 109
DAL/DL - Delta Air Lines : 107
NKS/NK - Spirit Airlines : 70
FDX/FX - Federal Express : 26
UPS/5X - United Parcel Service : 25
EJA/1I - NetJets : 23
AMX/AM - AeroMéxico : 20
VIV/VB - Aeroenlaces Nacionales : 17
FFT/F9 - Frontier Airlines : 17
VOI/Y4 - Volaris : 17
ASA/AS - Alaska Airlines : 15
JBU/B6 - JetBlue Airways : 15
ENY/MQ - Envoy Air : 15
SLI/5D - AeroMexico Connect : 14
ACA/AC - Air Canada : 11
ATN/8C - Air Transport International : 10
LXJ/ - Flexjet : 8
XAA/ - Aeronautical Radio Inc : 7
CJT/W8 - Cargojet Airways : 7
BAW/BA - British Airways : 6
SCX/SY - Sun Country Airlines : 6
TAI/TA - Taca International Airlines : 6
SCM/ - American Jet International : 5
WJA/WS - WestJet : 5
GTI/5Y - Atlas Air : 4
HAL/HA - Hawaiian Airlines : 4
KLM/KL - KLM Royal Dutch Airlines : 3
CNS/ - Cobalt Air : 3
JSX/XE - JSX : 3
AAY/G4 - Allegiant Air : 2
ABX/GB - ABX Air : 2
AFR/AF - Air France : 2
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
NGF/ - Angel Flight America : 2
VTM/ - Aeronaves TSM : 2
LET/ - Aerolineas Ejecutivas : 2
CMP/CM - Copa Airlines : 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
LBQ/ - Quest Diagnostics : 2
THY/TK - Turkish Airlines : 2
EDV/9E - Endeavor Air : 2
TWY/ - Sunset Aviation, LLC : 2
ACW/ - SERVICIOS AEREOS ACROSS, S.A. DE C.V. : 2
RCH/MC - Air Mobility Command : 1
BYA/ - Berry Aviation : 1
GTX/ - GTA Air : 1
KFS/ - Kalitta Charters : 1
DLH/LH - Lufthansa : 1
JIA/OH - PSA Airlines : 1
RAX/ - Royal Air Freight : 1
USC/ - US Check Airlines : 1
TYS/YO - TransHolding System : 1
XSR/ - Executive AirShare : 1
ASP/SP - Aspen Airways : 1
JTL/ - Jet Linx Aviation : 1
FFL/ - ForeFlight : 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.