slap127 A really intersesting document published by Texas Instruments, explains the fundamentals of RF and how radio works..
Win RAR is a high efficiency file compression tool, it is not a special Chinese software file!
Find it here http://www.win-rar.com/download.html?&L=0, unzip all the folders to an SD/MD Card and insert to your Icom radio..
OR! you may prefer 7-Zip decompression find it here http://www.7-zip.org/download.html
Smith Chart Tutorial
If you have ever wanted to know how to read a smith chart, have a look here really interesting..
http://blog.ashurex.com/2012/03/15/creating-ssh-proxy-tunnel-putty/ one from James M0JFP tunnelling SSH style