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today on radio kd8 tte we're going to talk about sending alerts and other information by radio we're going to see some of the kinds of technologies that are in use when you hear some of those transmissions by tuning around and listening on the radio before we get into that though subscribe to the channel make sure you don't miss any of our videos on radio messaging and emergency communication stick around the amateur radio service is a powerful communication tool as we recently demonstrated in the black swan 20 communications exercise how can emergency managers organizational leaders and individual members of the public be alerted when there's critical information that they need to preserve life and property let's consider the services that exist today how they're being used and then we'll take a look again at the role that amateur radio can play in making our communities more resilient most of us are already familiar with the emergency alert system this is what you see when tv and radio programming is interrupted for transmission of critical messages like severe weather amber alerts and of course the periodic test the transmission begins with three data bursts with information about the alert the attention signal the message and the end of message burst this system is effective allowing for rapid distribution of messages but it works only one way and it works only for people who happen to be tuned in to radio or tv at the time of the transmission how can messages be sent to people who aren't tuned into radio or tv at the time of transmission one of the options is the national oceanic and atmospheric administration noaa weather all hazards radio weather all hazards radio station kig 86 columbus ohio broadcasting on a frequency of 162.55 megahertz and serving central ohio including columbus and vicinity a broadcast service that runs on vhf around 162 megahertz this radio network provides not only weather information but alerts on other hazards including threats to public safety those data bursts that you hear at the beginning of those emergency alert system transmissions are also on the noaa weather all hazards radio transmissions that allows for a weather radio to be configured so that it will play the sound that you alert only when it is relevant the noaa weather all hazards radio broadcast can be received by many other radios including the amateur handy talkies radios for other services like general mobile radio service gmrs the family radio service frs and citizens band cb coverage is excellent throughout most of the united states thanks to the ability to have the radio play alerts only of particular interest those weather radios being left on all the time is not going to cause undue disturbance the downside of course is that you still need to be near the radio to hear it that doesn't mean that there's no way to get an alert if you don't happen to be near a weather radio or radio or tv thanks to the wireless emergency alert like the emergency alert system on radio and tv the wireless emergency alert has a short message that interrupts whatever's happening delivery in this case happens to be by mobile phone these messages are broadcast from mobile phone towers to enabled devices in the areas targeted for messaging because they don't rely on the carrier's network capacity for messaging even in network overload these short messages can get through as long as the phone has good enough signal to receive the alerts the emergency alert system noaa weather all hazards radio and the wireless emergency alert are all different pathways for getting a message distributed the interoperable public alert and warning system ipaws is a platform for message authentication and routing to the pathways needed to get the message out over many channels at once in radio kd8 tte episode 28 we talked about ipaws and the testing of a message from the ipaws platform at the federal government down to individual county stations in ohio using only radio so that the system would work even if internet service is interrupted or lost at any point along the way this radio only ipaws message relay was performed for the first time ever in october 2020 as part of the ohio military reserves black swan 20 exercise auxiliary communications operators received the ipaws message at a government station at columbiana county emergency management agency the messages were then originated for relay and delivery through amateur circuits and brought to a scheduled radio net where representatives from the 10 districts of ohio's amateur radio emergency service received their copies of the messages and further relayed them participation proved this concept quite nicely an attractive feature of this message relay and delivery method is that it provides a means for two-way messaging the recipient can reply to the sender unlike traditional broadcast methods here's a link to episode 28 where this concept and performance during the exercise is discussed in more detail this is something that radio amateurs need to spend some time thinking about our service is distinct from other methods making it a better option for some tasks and inappropriate for other tasks another information sharing pathway that you might know about is wwv the hf or shortwave station run by the national institute for standards and technology nist most listeners know it for transmitting accurate time information and that atomic time keeping products like watches and wall clocks use its low frequency sibling wwvb for staying in sync if you listen long enough however you'll discover that in addition to accurate time broadcasting there is also a place for voice information broadcast these have been used for various purposes over the course of more than 100 years of operation of the station at the time of making this video minute 10 of the hour is dedicated to information about a military auxiliary radio service mars exercise being undertaken this is how wwv sounded at station kda tte on five megahertz at 7 10 am local time on october 25 2020 hours 10 minutes coordinated universal time [Applause] your attention scene the military auxiliary radio system organization or mars will provide announcements on minute 10 of the wwv broadcast and minute 50 of the wwva broadcast these announcements will provide information to participants regarding the success date crime and location of the exercise announcements will air two weeks prior to and during each exercise please go to www dot d-o-d-m-a-r-s dot org for more information [Applause] in summary getting alert messages to a lot of people is complicated in the united states we've got several systems all being developed to improve interoperability to get critical information to the people who need it to preserve life and property in times of emergency to learn more subscribe to the channel so you don't miss any of the new information that we're presenting check the playlist to see what we've already covered like and share this video if you found it to be helpful use the comments section below to add your thoughts and to ask questions until next time this is radio kda tte [Music] out you