(You can't see the flashes without HD ... the video compression eliminates them)
Here's a 2"x3" stainless steel "20 Mile - Silent Universal Signals Mirror" I bought off the Internet at 22 mile range. I can't certify the "20 miles" - I couldn't see the flashes with my naked eye - only with binoculars (this telephoto video picks it up too). This video is good testimony to the aiming method - my novice student hit me very reliably at 22 miles (he'd never used this mirror or aiming method before - I coached him by cell phone). This is a single sided mirror with a plain round sighting hole - he looked through the sighting hole at me, caught the shadow cast forward by the sighting hole on his fingers, and flicked that shadow across my position to flash me. This particular mirror is very thin and light, but generally I'd recommend the 2"x3" polycarbonate Adventure Medical Kits "Rescue Flash" mirror for those looking for a small, light mirror. The Rescue Flash is brighter and easier to aim than this one - we tested it the same day, and I could see it by naked eye. I put up a video of that session here, too.
That's pretty neat to see at that distance. I've read that signal mirrors can be effective at even longer distances than 20 miles. I just completed a video that teaches how to signal effectively with a hand mirror. I'll attach it.
CrypticCRICKET 1 year ago
@CrypticCRICKET Yes, in two of my other videos, another friend is flashing me from 40+ miles. He used a bigger, more reflective mirror: 3"x5" glass vs. this 2"x3" metal mirror. I found your video, but it isn't in my "video attachments" folder for approval. I'll be happy to approve it, once it gets there, though. Your video is the most thorough one I've seen for that particular technique - lots of good stuff. See also: "The Signaling Mirror: WWII US Government Training Film" on YouTube.
rafowell 1 year ago