FOR YOUR INFORMATION All information and illustrations in this manual are based on the information avaible when this manual was printed. This second edition, is printed in september 1995 and valid from software version 1.19. We make reservations concerning errors in this manual, and all specifications are subject to change without further notice. S.P. Radio A/S has the copyright, all rights are reserved. Copyright 1992,1995.
TABLE OF CONTENTS 1. GENERAL INFORMATION 1.1 1.2 1.3 1.4 2. Introduction Basic system description ARQ operation FEC operation 2-1 2-1 2-1 2-2 USING THE RADIOTELEX SYSTEM 3.1 Introduction 3.2 The Window Interface 3.3 APPLICATIONS overview 3.4 Message Handling 3.5 Radiotelex Communication 3.5.1 Mailbox 3.5.2 Direct Call 4. 1-1 1-1 1-2 1-4 RADIO TELEX COMMUNICATION 2.1 2.2 2.3 2.4 3.
1 GENERAL INFORMATION 1.1 Introduction Welcome to the world of Radiotelex Communication. Your new system offers a wide variety of facilities to give you reliable and efficient communication with other mobile and fixed terrestrial subscribers. The brain of your equipment is the radiotelex/DSC modem. Regardless of your background or previous experience, we strongly recommend that you read this manual throughout.
1.3 Printer Printer Configuration The H1252A/B Hard Copy Printer should be connected to the radiotelex/DSC modem, and/or to the message terminal (or PC). Connecting the H1252A/B printer to the Radiotelex/DSC Modem offers the highest security of hard copy of incoming messages even if the Message Terminal (or PC) is turned off. In case both H1252A/B and Message Terminal are turned off, the Radiotelex/DSC Modem will hold the incoming message in the internal memory for a later outprint of a hard copy.
Paper loading Load the paper into the printer as described below. If you use fan-fold paper, please refer to the printer manufacturer’s handbook for paper loading instructions. 1. Place a roll of paper on the paper-shaft. 2. Remove the access cover and lift the co lumn indicator bar. 3. Pull the paper down into the paper guides and slide it under the platen. 4. Keep the paper release lever closed. 5. Turn the platen knob to pull the paper around the platen. 6. Lower the column indicator bar. 7.
1.4 Microfloppy Disk The floppy disk drive allows the Message Terminal to read messages stored on disk or write messages to a disk. The floppy disk used in the Message Terminal allows storage of up to 730,112 characters of text. There are several brands of disks at the market but the Message Terminal uses the 3.5 inch, two-sided, doubledensity, double track type. The disk can be used in any IBM compatible Personal Computer system which uses this 3.5 inch disk format.
Formatting your floppy disk. If the disk is not formatted from the manufactorer, you must format the disk before it can be used in the Message Terminal. Use only the FORMAT command once on each disk. If you format a disk on which you have stored messages, the information will be deleted. To format a disk insert the disk into the drive. Press F9 - The system menu will show up. Select Options - The option menu will show up. Select Format disk and Confirm.
2 RADIO TELEX COMMUNICATION. 2.1 Introduction This chapter describes the basic properties of radiotelex systems employing error correction in the form of ARQ (Automatic Retransmissions Request) and FEC ( Forward Error Correction). The technical details of the error correction is defined by the CCIR ( The International Consultative Committee ) in recommendation Rec. 476-3 and the new Rec. 625.
The characteristics of ARQ communication can be summarized: It practically guarantees error-free data, assuming reception is possible at all. Automatic exchange of identities guarantees connection with the requested station, also after rephasing conditions. Communication is possible between only two stations at a time. This gives some limited protection against unauthorised eavesdropping. The receiving station must have an operating transmitter. 2.
3 USING THE RADIOTELEX SYSTEM. 3.1 Introduction This chapter explains how to operate the Integrated Radiotelex system. Firstly you should learn how to use the window interface of the Message Terminal or the Message Terminal emulating Software for your MS-DOS compatible PC. The illustrations shown in this manual are identical for both Message Terminal and PC applications.
The Editor Window The boot window is followed by the start-up window which is the text editor window: Editor File Edit Search Options Applications 9:10 Quit --------- --------- --------- --------- --------- --------- -------- -------ASCII: 1 Chars Line 1 Col 1 Inserting The window is divided into 3 main areas, which from top to bottom are: Main Menu Line File Edit Search Options Applications Quit On the Main Menu Line you will find the Main Commands.
Using the Window Interface The easy operation of the system is based on pop-up windows, also known as menus. In general you need only to use a very few numbers of keys, in order to select and execute any of the numerous powerful commands in the system. The few keys you must to use are: Esc . . . . . . . . . . . . .(Escape) used to escape from Menus Alt . . . . . . . . . . . . .(left placed Alternate) used to enter and escape from Command Line Direction Keys. . . .
07700 +? 29.02 16840 Radiotelex Mail DirectCall Stations Watchkeeping Options ¤Rtx auto popup Printer... Terminal mode... By means of the direction key, step your way down, until the ‘Printer...’ command is high-lighted. Enter the Printer menu by hitting the ENTER key, and your screen picture will now display the Printer menu.
3.3 APPLICATIONS overview The program can handle several independent applications. An application is an independent part of the program which may run separately without having any effect on the other applications. The program has a total of 6 different applications. An easy way to select an application is to use the function keys: F10 and the overview below appears showing the Applications menu.
3.4 Message Handling Using the Text Editor Creating a message is quite simple. The text is entered in the Text editor by means of the keyboard, controlled by the intelligent text editor. Before any new text is entered, it is a good idea to clear the Text editor. To clear the Text editor, enter menus: F1 FILE The editor menu is selected The file menu is selected * Select “New Telex” and hit ENTER, as the Coast Station is supposed to forward the message to a telex subscriber.
Copy a block Having marked a block, press CONTROL+INS and position the cursor at any new location. By holding down the SHIFT key and hitting the INS key the block is inserted. Move a block Having marked a block, press SHIFT+DEL and position the cursor at any new location. By holding down the SHIFT key and hitting the INS key the block is inserted. Search for text ALT+F7 prompts you for the text to be searched for. Type the text and hit ENTER. Replace text ALT+F8 prompts you for the text to be replaced.
Saving a message onto floppy disk Assuming we want to save the text we typed in earlier (page 3-6) on the floppy disk, enter the menus: F1 FILE SAVE The editor menu is selected. The editor file menu is selected. The file save menu is selected. Editor File Edit Search New Telex New ASCII Load file... Merge file... Save... Options Applications 10:32 Quit 07710 diotelex system 92 Save to: A:\TEXT.TLX radiotelex system. Print t Print file... Directory... New path...
To obtain a hard copy of the Text editor without saving the text beforehand, enter the menus: F1 FILE PRINT TEXT The editor menu is selected. The editor file menu is selected. The editor text will be printed. The Message Terminal will confirm: 3.5 Printing ... Radiotelex Communication There are two ways to communicate by means of this radiotelex system: Mail which is a store-and-forward, and Direct call mode where dialogue is possible. 3.5.
You can now insert the recipient. Name of destination : International number: Type: Coast station: S.P.RADIO 05598186717 Fax Maritex-Sweden-A Ð Ð Editor 10:48 Ã Â Fi Ð Ã Ð Addressbook To: Ã From Edit Insert Delete Re: Ã Date Name Danship sing Dansupply mobil Ole Hansen lyra This S.P.RADIO lyra S.P.RADIO mar-f Rega S.P.RADIO mobil S.P.
Mailbox set up In the following example you can set up a message which is to be transmitted from the mailbox. The example is a FAX send to S.P.RADIO through the coast station Maritex-Sweden-A. Destination: Forward format: Coast station: Text: S.P.RADIO FAX Maritex File name:TEXT.TLX Ð Ð Editor à Р10:50 Ð Â Destination h Ãà Options Ð Â Danship sing Dansupply mobil Ole Hansen lyra S.P.RADIO lyra S.P.RADIO mar-f S.P.RADIO mobil S.P.
At time 11:50 the radiotelex modem will start scanning the coast station Maritex-Sweden-A for a channel transmitting the free signal of the station. The radiotelex modem will for a period of two minutes now scan the coast station MaritexSweden-A only, independent of the stations chosen in the watchkeeping menu. When the radiotelex modem finds a channel with a free signal from Maritex-Sweden-A, the transmitter is started, and the radiotelex modem will lock to the coast station.
Mailbox contents. If you want to have a look at the contents of the mailbox this can be done in the writing field of the DirectCall by entering the menus: F3 DIRECTCALL The radiotelex menu is selected. The directcall menu is selected. Activate the left ALT key to place the cursor in the writing field and write the command: MAIL and press ENTER. The message terminal will display the contents of the mail box.
3.5.2 Direct call Direct call is used when you wish to enter a dialogue with a coast station or another mobile radiotelex system (e.g. a ship). The possibility of a dialogue does not exist in the mailbox call. In the direct call menu three types of calls are available: 1.ARQ call where dialogue is wanted to a coast station which transmits the free signal when a channel is free to use. 2.ARQ call to a mobile radiotelex system (e.g. a ship), this station does not transmit a free signal. 3.
SEND Send indicator. Transmitting data. The indicator will flash when the output buffer is empty, i.e. the message has been transmitted. REPEAT Repeat indicator. Error in received or transmitted data. DirectCall commands If you in the DirectCall Main Menu have selected Commands you will furthermore have the following commands: Who-are-you: Extract answer-back from opposite party. This-is: Send own answer-back. Send time: Send date and time. Send bell: Send a bell command to the called part.
Frequency set up. The radiotelex modem is normally scanning ARQ or DSC frequencies. If you want the radiotelex modem to listen on a certain RX frequency enter menu F3 DIRECTCALL FREQUENCY The radiotelex menu is selected. The directcall menu is selected. The directcall frequency set up menu is selected. You will now see this display: РРEditor 12:20 РРDirectCall LOCK CONNECT SEND à REPEAT  Call Commands Over End Frequency à  ^PRx. frequency: 4204 Tx.
Activating an ARQ Call An ARQ call can be activated to a coast station transmitting a channel free signal -i.e. the station (channel) is free to receive a call. This will be illustrated below in the section: CALL CALL procedure. An ARQ call can be activated to a coast station or a mobile station not transmitting a free signal. This type of call will be illustrated later in the section: CALL ARQ procedure. CALL CALL Procedure.
If a pair of frequencies is chosen, the radiotelex modem will listen on the chosen Rx frequency, standby for a free signal. If no pair of frequencies is chosen, the radiotelex modem scan the four frequencies chosen of the MUF programme and the frequencies marked with a + sign in the station frequency table, standby for a free signal on one of the scanned frequencies. When a free signal is located the scan stops and the radiotelex modem starts checking the channel.
The above illustrated connection, with the coast station Lyngby Radio, shows how a direct telex connection is performed. You can follow the procedure step by step until the end command which is ‘brk+’. When receiving this command the coast station will break the connection. CALL ARQ procedure.
A call could develop as illustrated below. РРEditor 14:36 РРDirectCall LOCK CONNECT SEND REPEAT à  Call Commands Over End Frequency à  > Call in progress 14:35 ARQ: Connected to 219000015+ You are connected to the called stn.. 07700 SAILOR X +? 07700 sailor x to: s.p.radio from: s/s sailor 07710 re: test of radiotelex system date: 09:21 1992-06-02 You ask "who are you". You send "this is". You start to send your message. this is a test of my new hf ssb radiotelex system.
If you have selected ‘FEC selective call’ you must key in the name or the number of the station to be called and the Tx frequency on which you want to call the station. If you have selected ‘FEC collective call’ you only have to key in the Tx frequency on which you want to transmit your message. The call illustrated below is a FEC selective call to a station with the number 219000015.
By high-lightning the file you want to view and press Enter, the contents of the file can be examined. If the file and the ‘Print’ command from the command line both are high-lighted and you press Enter the contents of the file will be printed. The files shown in the Directory will have the contents of the received message and are set up when you are receiving an ARQ or a FEC call. The files named FEC will be overwritten when they are older than 25 hours.
Rtx auto popup. The Rtx auto popup is an option, which automatically will activate the directcall window, when an ARQ call or a FEC call is received. The option is activated by entering the menus: F3 OPTIONS The radiotelex menu is selected. The radiotelex Options menu is selected. Editor File Edit To: From: Re: Date: Search Options Applications 11 16 Quit S.P.Radio s/s Sailor 07710 Radiotelex Mail DirectCall Stations Watchkeeping Options This ¤Rtx auto popup Regards Printer...
Watchkeeping Table Enables you to Insert, Delete or view the stations to be watched. Below is shown an example: Editor File Edit To: From: Re: Date: Search Options S.P.Radio s/s Sailor 07 Direct Applications Quit Watchkeeping Table Insert Mail 11 13 Delete Frequencies Lyngby This Station Regards Maritex-Sweden-A Maritex-Sweden-B Maritex-Sweden-C Maritex-Panama Maritex-Philippines Maritex-Norway The Operator --------- --------Telex: TEST.TLX 171 Chars le...
4 STATIONS- AND WATCHKEEPING 4.1 Introduction This chapter gives you an introduction to the configuration of the stations, with their associated frequencies and parameters. Also watchkeeping is described in this chapter. 4.2 Stations menu You have the possibility of storing frequently called stations with their associated parameters and frequencies. A station is either a coast station or a mobile station. By entering the menus: F3 STATIONS The Radiotelex menu is selected.
The command line in this menu gives you the following options: Edit Existing frequency (-pairs) or channels can be edited line by line: In the illustration above the ‘Mask’ column indicates which frequency (-pair) or channel will be included in the frequency scan. If the ‘Mask’ shows the sign ‘+’ the frequency pair or channel will always be included in the frequency scan table. If the ‘Mask’ shows the sign ‘-’ the frequency will not be included in the frequency scan table.
4.3 Watchkeeping menu The watchkeeping table is a table of stations you wish the system to scan. For each station, the frequencies scanned are the frequencies you masked (a ‘+’ sign in the Mask column) via the Stations menu described above or directly in the frequency scan table described later in this chapter plus up to 4 frequencies selected via MUF calculation (Maximum Usable Frequency) among the total set of frequencies corresponding to that station.
ARQ frequencies, Lyngby File Edit Search Options App Edit Insert Delete ARQ: Connected to 21 Watchke 07700 +? 29.02 16840 Insert Mail Direct Muf Mask - Channel Del Lyngby + * * * * --------- --------Telex: 290292 83 Chars Line Rx. freq. 1613.0 4211.0 4215.5 6318.5 6321.0 8421.0 8427.0 12584.0 12592.0 Tx. freq. 2148.0 4173.0 4178.0 6267.0 6270.0 8381.0 8387.0 12481.5 12489.
5 OPTIONS MENU The contents of the radiotelex options menu is set up points concerning radiotelex. Entering the menus: F3 OPTIONS The radiotelex menu is selected. The radiotelex options menu is selected and you get the following display menu. Editor File To: From: Re: Date: Edit Search Options Applications 11 16 Quit S.P.Radio s/s Sailor 07710 Radiotelex Mail DirectCall Stations Watchkeeping Options This ¤Rtx auto popup Regards Printer... The Operator Terminal mode...
6 DIRECTORY MENU The directory facility is an individual application, where it is possible to work with the contents on a directory. which normally will be on your floppy disk. Press F4 The directory menu is selected. and you will get a display like the one shown below. 11:21 Directory File E View To: From: Re: Date: S. s/ Te 29 This is a Erase Print Filename 290292 290292A ARQ .000 ARQ .001 TEST .TLX 17_LINES.
7 SYSTEM MENU. In this Radiotelex system you have a system set up menu. You can change the colours and you can move the windows around on the screen. A second part of the system set up menu is used to set up parameters concerning general set up of the system, e.g time, serial port parameters, and beep on/off. Press F9 The system set up menu is selected. Editor System File Edit Search Options Applications Paint To: From: Re: Date: Move Options Quit S.P.
Beep Alarm for illegal user input. Screenblank... The screen will default turn black after a period specified by the operator. If the period is 0 the screen will never turn black. Applications can be shown permanently or hidden. Visibility... Serial... The operator may set up the serial ports. NOTE: The ports are default configured and should not be changed. Printer...
8 FUNCTION COMMANDS.APPENDIX 1 The following commands may be used in the radiotelex service. AMV+ Message to AMVER. Automatically connects to AMVER, New York. The Danish Ministry of Industries pays for the call. BRK+ Terminates the radiotelex connection. DIRTLXxy+ For direct telex connection to a subscriber. x = country code for countries which is not the same as the country of the called coast station, y = subscriber’s telex number. For example DIRTLX05612345+ ( Norway 12345 ).
