MDC-4800

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MDC-4800
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Frequencies 150 MHzMegaHertz (MHz) 10^6 Hz150,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
150,000 kHzKiloHertz (kHz) 10^3 Hz
,850 MHzMegaHertz (MHz) 10^6 Hz850,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
850,000 kHzKiloHertz (kHz) 10^3 Hz
150,000 kHzKiloHertz (kHz) 10^3 Hz
150 MHzMegaHertz (MHz) 10^6 Hz
850,000 kHzKiloHertz (kHz) 10^3 Hz
850 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 150 MHzMegaHertz (MHz) 10^6 Hz150,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
150,000 kHzKiloHertz (kHz) 10^3 Hz
- 850 MHzMegaHertz (MHz) 10^6 Hz850,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
850,000 kHzKiloHertz (kHz) 10^3 Hz
Mode NFMNarrowband Frequency Modulation
Modulation GFSKGaussian Frequency-Shift Keying
ACFAutoCorrelation Function
Bandwidth 12500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).12.5 kHzKiloHertz (kHz) 10^3 Hz
0.0125 MHzMegaHertz (MHz) 10^6 Hz
12.5 kHzKiloHertz (kHz) 10^3 Hz
0.0125 MHzMegaHertz (MHz) 10^6 Hz
12.5 kHzKiloHertz (kHz) 10^3 Hz
0.0125 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description Motorola's MDC-4800 is a data protocol that was used in ARDIS and DataTAC Networks as well as in 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. networks. RD-LAP was derived from this mode. Also known as Motorola Mobile Data Communications System (MODACOM)
I/Q Raw Recording
Audio Sample

Motorola's MDC-4800 is a data protocol that was used in ARDIS and DataTAC Networks as well as in 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. networks. RD-LAP was derived from this mode. Also known as Motorola Mobile Data Communications System (MODACOM)

Apart from ARDIS, MDC-4800 was used in 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., public safety, and other data terminal usages.

Characteristics[edit]

Maximum message size is 2,048 bytes. Max OTA size is 256. GFSKGaussian Frequency-Shift Keying, 4.8 kbpsKilobits per second (kbps)

Convolutionally coded, rate 1/2, constraint length 7, of a 112-bit block. This block is put into a 7x16 matrix in column order and read out in row order.

Interleaving protects 3.3 msmilliseconds (.001 of a second) (~16 bits) burst errors 90% of the time.

Packet length is 256 bytes; longer messages are subdivided into 240 byte packets and reassembled at the receiving end.

May also be known as Motorola Mobile Data Communications System (MODACOM).


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