Checkin your home made antennas


#1

Found this whilst browsing

http://www.rtl-sdr.com/rtl-sdr-tutorial-measuring-filter-characteristics-and-antenna-vswr-with-an-rtl-sdr-and-noise-source/

just off to try it my self.

Edit: the way to do the VSWR forumla in excel is =(10^(RC-1]/20)+1)/(10^(RC-1]/20)-1)

i use RC in excel the cell reference is the adjusted RL column in the example above.

edit: the rtlpan.exe in the tutorial is very good for filter checking.