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 : 600
SWA/WN - Southwest Airlines : 447
AAL/AA - American Airlines : 194
ASH/YV - Mesa Airlines : 168
UCA/C5 - CommutAir : 115
SKW/OO - SkyWest : 115
DAL/DL - Delta Air Lines : 102
NKS/NK - Spirit Airlines : 73
ENY/MQ - Envoy Air : 53
FFT/F9 - Frontier Airlines : 41
EJA/1I - NetJets : 40
VOI/Y4 - Volaris : 23
JBU/B6 - JetBlue Airways : 22
AMX/AM - AeroMéxico : 21
ACA/AC - Air Canada : 18
VIV/VB - Aeroenlaces Nacionales : 18
SLI/5D - AeroMexico Connect : 15
LXJ/ - Flexjet : 15
ASA/AS - Alaska Airlines : 13
ATN/8C - Air Transport International : 11
SCX/SY - Sun Country Airlines : 11
AAY/G4 - Allegiant Air : 9
JIA/OH - PSA Airlines : 8
TAI/TA - Taca International Airlines : 7
VTM/ - Aeronaves TSM : 6
JSX/XE - JSX : 6
UPS/5X - United Parcel Service : 5
CYO/ - Air Transport : 4
GTI/5Y - Atlas Air : 4
HAL/HA - Hawaiian Airlines : 4
CKS/K4 - Kalitta Air : 4
WJA/WS - WestJet : 4
AFR/AF - Air France : 3
SCM/ - American Jet International : 3
CLX/CV - Cargolux : 3
UAE/EK - Emirates : 3
RPA/RW - Republic Airlines : 3
JUS/U7 - USA Jet Airlines : 3
XSR/ - Executive AirShare : 3
JTL/ - Jet Linx Aviation : 3
ANA/NH - All Nippon Airways : 2
ANZ/NZ - Air New Zealand : 2
BAW/BA - British Airways : 2
CJT/W8 - Cargojet Airways : 2
EVA/BR - EVA Air : 2
DCM/ - FLTPLAN : 2
IBE/IB - Iberia Airlines : 2
KLM/KL - KLM Royal Dutch Airlines : 2
DLH/LH - Lufthansa : 2
PAT/ - Department of the Army, Priority Air Transport : 2
QFA/QF - Qantas : 2
QTR/QR - Qatar Airways : 2
THY/TK - Turkish Airlines : 2
EDV/9E - Endeavor Air : 2
ACW/ - SERVICIOS AEREOS ACROSS, S.A. DE C.V. : 2
ABX/GB - ABX Air : 1
ASZ/OB - Astrakhan Airlines : 1
AVA/AV - Avianca - Aerovias Nacionales de Colombia : 1
NGF/ - Angel Flight America : 1
XAA/ - Aeronautical Radio Inc : 1
CAL/CI - China Airlines : 1
EJM/ - Executive Jet Management : 1
FDX/FX - Federal Express : 1
FRG/ - Freight Runners Express : 1
HER/UD - Hex'Air : 1
SCW/ - Malmo Aviation : 1
SCW/TF - Malmö Aviation : 1
YEL/YE - Yellowtail : 1
NCR/N8 - National Air Cargo : 1
BOX/3S - Aerologic : 1
CWG/ - Wing Aviation : 1
ASP/SP - Aspen Airways : 1
CNS/ - Cobalt Air : 1
TWY/ - Sunset Aviation, LLC : 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.