The signal originates at the Weather Service Headquarters in Silver Spring, Maryland. It is uplinked to GOES satellites from the transmission site in Wallops Island, Virginia. The signal is encoded and modulated for satellite broadcast with equipment developed by Zephyrus. The information is distributed as a signal that allows your personal computer to become a graphics, data, and alarm terminal. The software provides visible and audible alarms when warnings are transmitted .
Software settings permit selection of items to be automatically printed as they are received.
Tulsa based Zephyrus Electronics is the pioneer in development of low-cost satellite data broadcast equipment. Installation is normally done by the user and typically takes less than one hour to complete. In some areas, the Emwin signal is recovered from satellite and retransmitted by FM SCA subcarriers, or by way of a stand-alone VHF signal. Using Zephyrus equipment, VHF signals are now being broadcast at 9600 baud. This is done using a similar technique we provided to the National Weather Service to put the 9600 baud signal on the GOES satellites.