Digital Dispatch Systems MDT

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Digital Dispatch Systems MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office.
MDT data terminals.jpg
Frequencies 854.7875 MHzMegaHertz (MHz) 10^6 Hz854,787,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
854,787.5 kHzKiloHertz (kHz) 10^3 Hz
,152 MHzMegaHertz (MHz) 10^6 Hz152,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
152,000 kHzKiloHertz (kHz) 10^3 Hz
152,000 kHzKiloHertz (kHz) 10^3 Hz
152 MHzMegaHertz (MHz) 10^6 Hz
854,787.5 kHzKiloHertz (kHz) 10^3 Hz
854.788 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 152 MHzMegaHertz (MHz) 10^6 Hz152,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
152,000 kHzKiloHertz (kHz) 10^3 Hz
- 854.788 MHzMegaHertz (MHz) 10^6 Hz854,787,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
854,787.5 kHzKiloHertz (kHz) 10^3 Hz
Mode NFMNarrowband Frequency Modulation
Modulation PSKPhase-Shift Keying
ACFAutoCorrelation Function
Bandwidth 8 kHzKiloHertz (kHz) 10^3 Hz8,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.008 MHzMegaHertz (MHz) 10^6 Hz
kHzKiloHertz (kHz) 10^3 Hz
0.008 MHzMegaHertz (MHz) 10^6 Hz
kHzKiloHertz (kHz) 10^3 Hz
0.008 MHzMegaHertz (MHz) 10^6 Hz
Location United States
Short Description Digital Dispatch Systems Mobile Data Terminal is a dispatching system used by taxi and private transportation companies.
I/Q Raw Recording Download file
Audio Sample
Digital Dispatch Systems MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office. is a dispatching system used by taxi and private transportation companies. Data transmitted on this data link include MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office. usage, credit card information (encrypted), GPS location, and general dispatching activities. Uses a 4800 bpsBits per second (bps) QPSKQuadrature Phase-Shift Keying (2 bits per symbol) signal running at 2400 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. When idle (no data transmitting), it repeats a ~43Bd idle pattern. Data can be heard in very short bursts.


Samples[edit]

NFMNarrowband Frequency Modulation USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)

Additional Samples[edit]

152 MHzMegaHertz (MHz) 10^6 Hz in Milwaukee.


Frequencies[edit]

Reported to be in the 150 MHzMegaHertz (MHz) 10^6 Hz band, the 400 MHzMegaHertz (MHz) 10^6 Hz band, and the 800 MHzMegaHertz (MHz) 10^6 Hz band. One notable user is London Towncars Inc in New York City. They are the first licensed chauffeured transportation company in New York City. FCC record

Additional Links[edit]

Additional Images[edit]