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MeteoCom RadioTelex

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There are very good possibilities to get weather information from the internet, although on the ships the conventional Navtext, Telex, Tele Text (RTTY) is still used. Also Morse code (CW) is still used. It may be that they have a computer and can go onto the net using handy or WLAN but the weather services still transmit as they have always done, because a support for the internet is not yet possible on the oceans and not all weather services are able to supply their data over the internet the RadioCom has the radio reception of Telex integrated.

A shortwave receiver is connected to the computer and is controlled over the RadioControl from the program MeteoCom (see
Radio-Reception). Hereby weather reports as text are displayed by the MeteoViewer.
 

In the MeteoCom, which runs unseen in the background with the RadioControl you can watch the actual reception process this is only a small monitor from here you get onto the RadioControl-Program.
 

Here you will find the three sections for the task of the radio reception. One section is for the radio control, one for the FrequencyTimeManger and one for the decoding of the different types of transmission. The FrequencyTimeManger is to help get the right transmission at the right time and using the right type of decoding fully automatic.

   

Because not every knows who, when, what, and where is transmitted and for which region the weather report is a ScheduleManager is integrated to help you. The data can be updated over the internet.

Because not every knows who, when, what, and where is transmitted and for which region the weather report is a ScheduleManager is integrated to help you. The data can be updated over the internet. The decoder is connected with the Signal-Processor in the computer and saves having to acquire the expensive external hardware decoder. The problems with the reception of weather card by shortwave radio are well known for this reason a few things are integrated to help such as: every Shift is possible, every bandwidth and offset are possible. The modes are:

  • Synchronic and asynchrony modes

  • BAUD = 45-300 Baud

  • BAUDOT = Standard RTTY

  • SITOR / FEC = NAVTEX

  • SHIFT = 85,170,425, 825 and Variable

  • Filter = every bandwidth and offset

A very good filter helps get rid off disturbances. The automatically saved weather reports can be displayed in the MeteoViewer they can be viewed printed or saved.

 

A characteristic is the decoding of forecast time series texts of the DWD, which transfers afterwards into a worldmap. The RadioControl often also receives 5er groups off numbers these are coded signals that are called SYNOP. It is in a number code so that they can be understood in every language, The RadioControl uses this coded data they are then prepared meteorological and mathematically and are decoded into the needed language and placed into the world weather cards so that they can be used with the MeteoViewer the data is displayed as Isobars, Isotherm or as small symbols for wind, temperature, clouds, rain, Pressure and so on.

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