Sandy, Thought this would be of interest to you https://hackaday.com/2018/07/11/ham-designed-gear-used-in-thailand-cave-rescue/ 73 Martin W6MRR -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.amrad.org/pipermail/tacos/attachments/20180711/ee6de6a8/attachment.html>