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 : 662
SWA/WN - Southwest Airlines : 406
AAL/AA - American Airlines : 186
ASH/YV - Mesa Airlines : 183
UCA/C5 - CommutAir : 145
DAL/DL - Delta Air Lines : 132
SKW/OO - SkyWest : 82
NKS/NK - Spirit Airlines : 63
EJA/1I - NetJets : 55
FFT/F9 - Frontier Airlines : 49
JBU/B6 - JetBlue Airways : 39
AMX/AM - AeroMéxico : 24
ASA/AS - Alaska Airlines : 23
VTM/ - Aeronaves TSM : 23
VIV/VB - Aeroenlaces Nacionales : 22
ACA/AC - Air Canada : 21
VOI/Y4 - Volaris : 21
ATN/8C - Air Transport International : 19
UPS/5X - United Parcel Service : 19
LXJ/ - Flexjet : 17
FDX/FX - Federal Express : 17
ENY/MQ - Envoy Air : 16
WJA/WS - WestJet : 12
SLI/5D - AeroMexico Connect : 9
EJM/ - Executive Jet Management : 9
CJT/W8 - Cargojet Airways : 8
JIA/OH - PSA Airlines : 8
JTL/ - Jet Linx Aviation : 7
GTI/5Y - Atlas Air : 6
TAI/TA - Taca International Airlines : 6
AAY/G4 - Allegiant Air : 5
CYO/ - Air Transport : 4
CLX/CV - Cargolux : 4
CMP/CM - Copa Airlines : 4
RPA/RW - Republic Airlines : 4
SCX/SY - Sun Country Airlines : 4
EDV/9E - Endeavor Air : 4
JSX/XE - JSX : 4
ABX/GB - ABX Air : 3
SCM/ - American Jet International : 3
BAW/BA - British Airways : 3
UAE/EK - Emirates : 3
JUS/U7 - USA Jet Airlines : 3
YEL/YE - Yellowtail : 3
FFL/ - ForeFlight : 3
CNS/ - Cobalt Air : 3
AFR/AF - Air France : 2
AJT/M6 - Amerijet International : 2
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
AVA/AV - Avianca - Aerovias Nacionales de Colombia : 2
XAA/ - Aeronautical Radio Inc : 2
LET/ - Aerolineas Ejecutivas : 2
EVA/BR - EVA Air : 2
DCM/ - FLTPLAN : 2
KLM/KL - KLM Royal Dutch Airlines : 2
DLH/LH - Lufthansa : 2
POE/PD - Porter Airlines : 2
QTR/QR - Qatar Airways : 2
LBQ/ - Quest Diagnostics : 2
RAX/ - Royal Air Freight : 2
THY/TK - Turkish Airlines : 2
XSR/ - Executive AirShare : 2
ROU/RV - Air Canada Rouge : 2
CAP/ - Civil Air Patrol : 2
TWY/ - Sunset Aviation, LLC : 2
SIS/ - Scott Aviation, LLC : 2
AMF/A8 - Ameriflight : 1
NGF/ - Angel Flight America : 1
TSC/TS - Air Transat : 1
BYA/ - Berry Aviation : 1
VTS/ - Everts Air Alaska/Everts Air Cargo : 1
KFS/ - Kalitta Charters : 1
GEC/LH - Lufthansa Cargo : 1
NTW/CE - Nationwide Airlines : 1
OAE/OY - Omni Air International : 1
PKW/ - Sierra/Pak West Airlines : 1
QFA/QF - Qantas : 1
RRR/ - Royal Air Force : 1
BOX/3S - Aerologic : 1
SBE/ - World Class Aviation : 1
JAS/ - Jet Aviation Flight Services : 1
CWG/ - Wing Aviation : 1
ASP/SP - Aspen Airways : 1
KAY/ - K5 Aviation GmbH : 1
EDG/ - Jet Edge : 1
ACW/ - SERVICIOS AEREOS ACROSS, S.A. DE C.V. : 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.