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As of 2009.02.01 COSPAS-SARSAT, the (Search and Rescue) satellite system will no longer process signals from 121.50 ELT's. As of that date the system will switch to 406 Mhz. As a result, signals transmitted from Breitling Emergency watches on 121.50 will only be picked by aircraft and Air Traffic Control monitoring that radio frequency. Has anyone heard as to whether or not Breitling plans on modifying the Emergency watch to transmit on the new frequency???
 

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Hi and welcome to our forum.

The change of frequency has been debated several times in the last couple of years. From recollection, housing a transmitter that would output 406Mhz and the associated antenna would be a serious engineering challenge to get the resulting device into a similar sized case. As it was, Breitling had to collaborate with Dessault to achieve the original solution to the problem. With advances in micro processors and circuits over the past 5-7 years it may be possible but nothing has been published as far as I can see that confirms the project is under way. I may be proved wrong in the next 24 hrs but I'm not going to hold my breath.

I will link a thread that was quite informative and also direct you to the article you can find on this forum that details far more about the correct perception on the uses of this sort of signaling device. Its technical and rightly so. I trust you will find the information useful.

and the article

https://www.watchuseek.com/showthread.php?t=170

the thread

https://www.watchuseek.com/showthread.php?t=33499

and another

https://www.watchuseek.com/showthread.php?t=121618&highlight=SARSAT
 
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