MDC-4800
 | |
|---|---|
| Frequencies | 150 MHz,850 MHz |
| Frequency Range | 150 MHz - 850 MHz |
| Mode | NFM |
| Modulation | GFSK |
| ACF | — |
| Emission Designator | — |
| Bandwidth | 12.5 kHz |
| Location | Worldwide |
| Short Description | Motorola's MDC-4800 is a data protocol that was used in ARDIS and DataTAC Networks as well as in MDT 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).
