An interesting report on a prototype arctic battery, uses a pull fuse to activate. https://apps.dtic.mil/sti/tr/pdf/AD0778198.pdf 73 Mark K1HF -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/mrca/attachments/20250919/c72f0f69/attachment.html>