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 : 596
SWA/WN - Southwest Airlines : 424
AAL/AA - American Airlines : 337
DAL/DL - Delta Air Lines : 214
ASH/YV - Mesa Airlines : 162
UCA/C5 - CommutAir : 123
SKW/OO - SkyWest : 122
NKS/NK - Spirit Airlines : 66
EJA/1I - NetJets : 47
FFT/F9 - Frontier Airlines : 46
ASA/AS - Alaska Airlines : 45
ENY/MQ - Envoy Air : 41
JBU/B6 - JetBlue Airways : 39
FDX/FX - Federal Express : 23
UPS/5X - United Parcel Service : 22
VOI/Y4 - Volaris : 20
AMX/AM - AeroMéxico : 17
WJA/WS - WestJet : 17
LXJ/ - Flexjet : 15
JIA/OH - PSA Airlines : 13
ATN/8C - Air Transport International : 12
VTM/ - Aeronaves TSM : 10
AAY/G4 - Allegiant Air : 8
SLI/5D - AeroMexico Connect : 8
ACA/AC - Air Canada : 8
VIV/VB - Aeroenlaces Nacionales : 8
JUS/U7 - USA Jet Airlines : 7
SCM/ - American Jet International : 6
EJM/ - Executive Jet Management : 6
TAI/TA - Taca International Airlines : 6
JSX/XE - JSX : 6
THY/TK - Turkish Airlines : 5
BAW/BA - British Airways : 4
CJT/W8 - Cargojet Airways : 4
SCX/SY - Sun Country Airlines : 4
XSR/ - Executive AirShare : 4
ABX/GB - ABX Air : 3
LET/ - Aerolineas Ejecutivas : 3
QTR/QR - Qatar Airways : 3
JTL/ - Jet Linx Aviation : 3
CNS/ - Cobalt Air : 3
AFR/AF - Air France : 2
AMF/A8 - Ameriflight : 2
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
XAA/ - Aeronautical Radio Inc : 2
TSC/TS - Air Transat : 2
CMP/CM - Copa Airlines : 2
EVA/BR - EVA Air : 2
UAE/EK - Emirates : 2
KLM/KL - KLM Royal Dutch Airlines : 2
DLH/LH - Lufthansa : 2
LBQ/ - Quest Diagnostics : 2
RPA/RW - Republic Airlines : 2
RAX/ - Royal Air Freight : 2
SWG/WG - Sunwing Airlines : 2
ROU/RV - Air Canada Rouge : 2
RDK/ - Memorial Hermann Hospital System : 2
FFL/ - ForeFlight : 2
TWY/ - Sunset Aviation, LLC : 2
AJI/ - Ameristar Jet Charter : 1
NGF/ - Angel Flight America : 1
CYO/ - Air Transport : 1
GTI/5Y - Atlas Air : 1
TAA/ - Aeroservicios de La Costa : 1
BYA/ - Berry Aviation : 1
CLX/CV - Cargolux : 1
DCM/ - FLTPLAN : 1
HER/UD - Hex'Air : 1
QXE/QX - Horizon Air : 1
GEC/LH - Lufthansa Cargo : 1
OAE/OY - Omni Air International : 1
PKW/ - Sierra/Pak West Airlines : 1
QFA/QF - Qantas : 1
NCR/N8 - National Air Cargo : 1
BOX/3S - Aerologic : 1
JAS/ - Jet Aviation Flight Services : 1
KAY/ - K5 Aviation GmbH : 1
CNV/ - US Navy Air Logistics Office : 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.