Czech Raildays 2011

Railway station Ostrava main station from 14th to 16th June 2011

Dear friends, Company DCom spol. s r.o. invites you to the 12th International trade fair of the railway technology Czech Raildays 2011, which will be held from 14th to 16th June 2011 in the commercial part of the railway station Ostrava main station. More information about the fair:

At the fair we will present our Integrated dispatching system RV3 with the base TRS-IP. Communications in the GSM-R system and cooperation with GTN will be presented. Also HYT radios and digital Hytera radios will be on display.

You will find us in hall A1, stand No. 10, where we exhibit along with AZD Praha. We look forward to your visit.

Hytera Training

China Shenzhen 25.-30.4.2011

We spent the Easter week on training in China at the company Hytera where the high-tech TETRA and DMR wireless solutions were presented in detail to us. The subject of training was a basic introduction to new products, and their detailed description and analysis of function with subsequent discussions of our proposals and demands for new and often specialized functionality. Assessment of the benefits and importance of new knowledge was resumed at best by the Head of R&D Mr. Tomáš Mádr: “We experienced at least one large and many small surprises every day.”
Training took place on 25. – 30. 4. 2011 by our technology partner Hytera Communications in Shenzhen within the scope of the project “With the excellent and satisfied employees among the European elite”, which is cofinanced from the European Union, the European Social Fund and the Operational Program “Human Resources and Employment.”
We are preparing presentations of news to share them with you soon.

Tehnika Beograd 2011

Beograd Fair ground from 9th to 13th May, 2011

DCom, spol. s r.o. invites you to visit our exhibition at Tehnika Trade Fair in Beograd from 9th to 13th May, 2011.

PYROS 2011

Brno Fair ground from 12th to 14th May, 2011

Dear business friends, we invite you to visit our booth at the IDET / PYROS 2011 Trade Fair at Brno Fair ground.
The exhibition will present the radio equipment for rescue and fire services – Integrated dispatching system RV3, and also by firemen popular analog radios HYT and new digital radios Hytera.
You will find us in Hall F, Booth No. 28.
We are looking forward to your visit

Radio modem MC13

Radio telemetry unit MC13

MC13 is innovated version of proven modem MC12F. Module MC13U is additional I/O module to modem unit MC13 with 8 binary inputs, 8 binary outputs and 4 analog inputs. Maximum of 4 modules MC13U can be connected. Other modules are connectable through serial interface RS-485 or I2C. Unit RTU MC13 is a compact block for mounting to DIN35 rail. Complete radio-block consists of MC13 with mobile radio Motorola GM DATABOX (or other) and power supply unit. USBIN port driver controls input and output signals. Different drivers provide functions necessary to control technology – set and reset of outputs, timing, pulsed (momentary) outputs and many others – the USBIN driver has more than 200 configurable parameters.


  • CPU 84C1510, 32 KB RAM, 64 KB FLASH
  • Serial port RS-485/RS-422/RS-232D
  • Modem boards:
    • Modem module MDC48P FFSK 1k2 to 4k8bps in radio channel
    • Modem module MDC98P GMSK 4k8 to 12kbps in radio channel
  • A/D converter 16 bit for measuring of analog signals
    • Received Strength Signal (RSSI) measurements
    • Accumulator voltage or supply voltage
  • Real Time Clock (RTC) with backup battery
  • 8 binary I/O signals for control and communication with radio (I2C bus, channel switching, PLL lock detection, etc.)


  • 4 analog inputs configurable to 0.1-40 mA or 0-40V for analog sensors, ranges programmable in steps 1-2-4-8…128
  • 8 binary inputs 12-48V DC, optically isolated up to 4kV
  • 8 binary outputs (4x relay contact 250V AC/8A, 4x open collector 100mA/50V)
  • Status indicators of all binary inputs and outputs by LEDs
  • Number of inputs/outputs is extendable by other modules connected via RS-485 or I2C bus.

Number of inputs/outputs is extendable by other modules conected via RS-485 or I2C bus. Connected can be also modules from Mikroklima, Advantech and others.


  • Firmware is backward compatible with modems MC12F with DMB protocol support
  • Firmware upgrade through both serial and radio ports
  • Management software RadioTermXpertfor comfortable configuration and FW upgrades
  • Remote parameter configuration from dispatching
  • Operation in more protocols (data transmission, configuration, paging) without reconfiguration
  • Protocol optimised to minimize loading of the network
  • Protocols DMB, X.25, X3.28, ASCII, ADAM, SAUTER, SAIA …
  • Communication protection based on DMB protocol, additional encryption by GMSK scrambler
  • Multifunction core allows customer defined functions as well as standard functions
  • Programmable functions of port drivers for local control and data collection
  • Multi-port structure supporting high number of logical ports and drivers
  • Easy expandable by modules for distributed control via serial line RS-485
  • Great possibilities of configuration – hundreds of programmable parameters
  • POCSAG, SELECT5 protocols for message sending to pagers

USBIN port functions:

The port driver provides inputs and outputs services. Its purpose is to process input/output data and to provide communication with central station via radio network in minimized form. It sets outputs, reads inputs, provides input noise protection. It has configurable parameters for measurement rate, alarm limits and slope of changes on each analog input.

Visualisation and control SW:

The communication with each unit in the network runs through DMB server, running on Windows NT4.0/2000/XP. DMB Server communicates with technology control processes and Network management sw utilizing ActiveX technology (using COM/DCOM Microsoft methods) or DMB over TCP/IP. Thanks to OLE it is also possible to integrate applications supporting only DDE/NetDDE into the system. For beginners in control and visualization we can recommend sw package Control Web 2000 from Alcor company.

Mechanical construction of MC13, MC13U

Plastic box designed for DIN35 rail size 6M
Material: Noryl UL94 V-O
Colour: Grey RAL7035
Dimensions: 106 x 90 x 58 mm

Example of radio network configuration with radio modems MC12/MC13: