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 : 547
SWA/WN - Southwest Airlines : 427
ASH/YV - Mesa Airlines : 189
AAL/AA - American Airlines : 177
DAL/DL - Delta Air Lines : 120
UCA/C5 - CommutAir : 111
SKW/OO - SkyWest : 94
NKS/NK - Spirit Airlines : 73
EJA/1I - NetJets : 39
JBU/B6 - JetBlue Airways : 39
FDX/FX - Federal Express : 31
FFT/F9 - Frontier Airlines : 28
ENY/MQ - Envoy Air : 26
UPS/5X - United Parcel Service : 23
AMX/AM - AeroMéxico : 18
VOI/Y4 - Volaris : 18
ASA/AS - Alaska Airlines : 14
ACA/AC - Air Canada : 13
LXJ/ - Flexjet : 13
CJT/W8 - Cargojet Airways : 12
WJA/WS - WestJet : 12
SLI/5D - AeroMexico Connect : 11
VIV/VB - Aeroenlaces Nacionales : 11
VTM/ - Aeronaves TSM : 11
GTI/5Y - Atlas Air : 11
JTL/ - Jet Linx Aviation : 10
JSX/XE - JSX : 10
ATN/8C - Air Transport International : 7
BAW/BA - British Airways : 7
AFR/AF - Air France : 6
SWG/WG - Sunwing Airlines : 6
JUS/U7 - USA Jet Airlines : 6
BYA/ - Berry Aviation : 5
ABX/GB - ABX Air : 4
KLM/KL - KLM Royal Dutch Airlines : 4
DLH/LH - Lufthansa : 4
QTR/QR - Qatar Airways : 4
SCX/SY - Sun Country Airlines : 4
THY/TK - Turkish Airlines : 4
TAI/TA - Taca International Airlines : 4
TWY/ - Sunset Aviation, LLC : 4
ATH/ - Aircraft Systems South Africa : 4
CMP/CM - Copa Airlines : 3
XSR/ - Executive AirShare : 3
ACW/ - SERVICIOS AEREOS ACROSS, S.A. DE C.V. : 3
AMF/A8 - Ameriflight : 2
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
CYO/ - Air Transport : 2
LET/ - Aerolineas Ejecutivas : 2
SCM/ - American Jet International : 2
EVA/BR - EVA Air : 2
UAE/EK - Emirates : 2
EJM/ - Executive Jet Management : 2
HER/UD - Hex'Air : 2
RPA/RW - Republic Airlines : 2
SIA/SQ - Singapore Airlines : 2
XOJ/ - Xojet : 2
JAS/ - Jet Aviation Flight Services : 2
EDV/9E - Endeavor Air : 2
CWG/ - Wing Aviation : 2
FTH/ - Mountain Aviation : 2
TNO/ - Aerotransporte de Carga Union : 1
CLX/CV - Cargolux : 1
EMD/ - Eaglemed (Ballard Aviation) : 1
EAL/EA - European Air Express : 1
DCM/ - FLTPLAN : 1
FRG/ - Freight Runners Express : 1
GEC/LH - Lufthansa Cargo : 1
JIA/OH - PSA Airlines : 1
QFA/QF - Qantas : 1
LBQ/ - Quest Diagnostics : 1
RAX/ - Royal Air Freight : 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.