A unique feature: Effective Time Display with Auto Count Down Function in Reecom Alert Radios

When a SAME alert is issued by NWS (National Weather Service) station, the event message and the expiration time will be sent together. The event expiration time varies from 15 minutes to 6 hours such as 0:15, 0:30, 0:45, 1:00, 1:30, 2:00, 2:30, 3:00, 3:30, 4:00, 4:30, 5:00, 5:30 and 6:00. See below the description of the expiration time quoted from NOAA.

Upon SAME alert receiving, not only will the radio display the event message, but the radio will also display the expiration time as 'Effective Time' on the LCD, Effective Time 6:00 for instance. Then, the radio will immediately start auto count down function in real time. The LCD will certainly display 5:59 in the next minute, then 5:58 and so on,  counting down minute by minute to 0:01 (says 1 minute left) and then expired after the last minute. Similarly, if the event expiration time received is 2:30, the Effective Time will be auto count down starting from 2:30 and the count down process will be completed in 2 hours 30 minutes. 

If multiple alerts received, the radio will only display the latest received event regardless of the Effective Time. However, all the Effective Times will be auto count down simultaneously and they can be viewed in the Event Memory. In the Event Memory, if the event Effective Time has expired, the LCD will display 'Effective Time OFF' or display the receiving channel (for R-200 or R-500 radio only). When the latest received event Effective Time expired and there are other active events, then, the next latest active event message and Effective Time will be shown on the LCD display. When all event Effective Times expired, no event messages will be displayed, the expired event messages together with date / time upon receiving can be reviewed in Event Memory, however.

About the expiration time and the valid time period, below is quoted from NOAA site:  http://www.nws.noaa.gov/nwr/nwrwarn.htm#B 

"NOTES about expiration time in SAME vs. valid time period in voice message: For short-fuse hazards, such as a tornado warning, the valid time period is from the broadcast time of the alert until the SAME message expiration time. For longer-fuse hazards, such as a winter storm warning, the beginning of the valid time period may not be the same as the alerting broadcast time and the end of the valid time period may not be the same as the SAME message expiration time. In such cases, updated messages are broadcast on or before the SAME message expiration time to provide fresh information. Updated messages will be alerted only for new warning information."

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