This weekly column is a collection of short snippets: practical self-sufficiency items, how-tos, lessons learned, tips and tricks, and news items — both from readers and from SurvivalBlog’s editors. We may select some long e-mails for posting as separate letters.
Tonya sent this instructional video link: Building a Smokeless Burn Barrel.
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Mike in Alaska pointed me to this fascinating read: Exclusive Front-Line Report: Modern Trench Warfare in Eastern Ukraine.
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‘Doesn’t happen every day’: Bear climbs tree, bites Wisconsin deer hunter in the back.
Reader Tom R. sent this:
“To your comment about HF signals being hard to find, they can be located almost instantly using TDOA and, if aircraft or satellites are involved, FDOA. DF is just a bonus when closing on the transmitter.”
JWR Replies: I suspect that to achieve truly precise NVIS HF-DF accuracy, a TDOA HF system must be supplemented with a chirp sounder to gauge which layer of the ionosphere a signal is propagating from. That data wouldn’t be necessary with a long-duration signal intercepted by a space-based FDOA system. However only a few national-level intelligence agencies have access to that equipment, and it must be specifically tasked, based on the priority of the intercept mission. Intercepting some militia in Michigan’s HF comms will probably not make it to the top of the NSA’s tasking list.
