Kantronics KPC–3 Plus User Manual
Also see for KPC-3 Plus: User guideUser guideManual
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141Copying Weather Broadcasts NWS EMWINMODEM mode can be used to copy emergency weather broadcasts by the NationalWeather Service. The NWS Emergency Managers Weather Information Network(EMWIN) is a wireless direct-to-computer information service that the National WeatherService (NWS) provides with help from the Federal Emergency Management Agency.The NWS feeds a constant stream of weather information (@ 1200,8,N,1), from aroundthe world, to a satellite orbiting the Earth. Many cities are coming on line now to capturethis stream and rebroadcast it on fixed VHF commercial FM frequencies just above the2-meter ham band.Using your TNC in MODEM mode, with a PC and communications software, you cancopy these broadcasts. The content of the broadcasts may be plain ASCII text(copyable with HyperTerminal) or graphics. For updated information on EMWIN andsoftware to copy its modes, search the Internet.To copy the broadcasts, simply cable together the equipment mentioned above, tuneyour VHF FM receiver to the local EMWIN frequency, set the KPC interface commandto MODEM, and follow the text on your PC screen.Kantronics Host Mode OperationKantronics‘ Host Mode allows your TNC to communicate with computer software that ismore sophisticated than standard terminal programs such as HyperTerminal. Software,such as Kantronics‘ HostMaster II+, that supports this mode will automatically set yourTNC INTFACE command to HOST mode and perform a soft reset.Your host program will provide you with some means to give commands to the TNC.For a complete description of your host program, refer to the manual that comes withyour software.After you switch to HOST mode, your TNC will remain in HOST mode until you switch toCOMMAND mode. The easiest way to switch out of HOST mode is to use your hostmode software (see instructions with that software). If you begin using HyperTerminalwhile the TNC is in HOST mode, you will see the message ― SØØ ‖, sent by the TNC toindicate that it is in HOST Mode. If you see this message, you must first exit the HostMode before you can start talking to your unit with a program such as HyperTerminal.You must send three characters to the TNC in order to exit the Host Mode and go backto COMMAND mode. First, send a FEND character (ASCII code 192), then the letter q(upper or lower case is ok), and finally another FEND character. Your TNC will thenleave Host Mode, switch to COMMAND mode, and send the usual Kantronics sign-onmessage. If you use a terminal program other than HyperTerminal, it may send thesecharacters automatically, or it may require that you carry out this same procedure to getout of HOST mode and to COMMAND mode. See Appendix D for details on thisprocedure. |
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