Looking at projects I could do. Googled SWR + Arduino and this is what I found. This could help me along with some of my projects. One thing that would make it even better was if it could read Frequency. Yes, you should know the frequency from your radio, but having this function can lead to other projects.
http://www.qsl.net/on7eq/projects/arduino_pwr_swr.htm
ThinkSchematics 
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