Survival Signal Mirror Flashes at 0.7, 11.1, 43 mile range
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Uploaded by rafowell on Apr 26, 2009
Signal mirror flashes at various ranges from 3"x5" glass
signal mirror with retroreflective mesh aimer, as described at
http://www.equipped.com/phony_signal_mirrors.htm . Modern signal mirrors
were developed in WWII for stranded personnel to signal rescue
planes/ships for help. Plastic, glass or metal signal mirrors are
issued to all US military pilots and US Coast Guard personnel, and are
required by international convention in life boats on ocean-going ships
and airliners. They are commonly recommended (and sometimes required) in
survival kits for hikers and boating. While the very narrow beam
reflected by the mirror lets it be seen at long range, as shown here, it
also means that they have to be pointed very accurately at the rescuer.
US Government testing in WWII established that retroreflective aimers
were greatly superior to the other types, and almost all US military
issue mirrors since WWII have had retroreflective aimers.
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Uploader Comments (rafowell)
All Comments (20)
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@logitechstanton Absolutely. There are directions on the back. You could figure this out in a minute.
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@morbidangelofdeath1 You are wrong. I have personally used one of these from 30+ miles away. They are amazing.
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how "good" do you have to be to use a signal mirror at that range? Do you train, or have a lot of experience using them? For example- could a person get the same frequency and constancy of flashes as you in this video with 2-3 hours of practice?
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Wow ! Impressive ,
At what distances was this?
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great info, thanks
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looks fake to me
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excellent
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Excellent demo. I had no idea the flash would be so obvious at long range!
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Impressive!
Kleinalrik 1 year ago
@Kleinalrik Clear air is the key, but in clear air, this is the range you can expect for a good 3"x5" glass mirror. That's what the US Navy found: "Mirror Flash Seen 45 Miles" , Naval Aviation News, August 1951, p. 28, . The 1850s British survey rule of thumb when surveying India was: "an inch for 10 miles, 2 inches for 20 miles, and so on" - see: "A manual of surveying for India". p400 (bottom)
rafowell 1 year ago