Talk:Search and rescue transponder

External links modified (January 2018)
Hello fellow Wikipedians,

I have just modified one external link on Search and rescue transponder. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://web.archive.org/web/20110614021952/http://www.navcen.uscg.gov/pdf/imo/circulars/sncirc197.pdf to http://www.navcen.uscg.gov/pdf/imo/circulars/sncirc197.pdf

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Cheers.— InternetArchiveBot  (Report bug) 17:59, 23 January 2018 (UTC)