Sunday, December 20, 2015

#37: Use a scope to measure the length and impedance of coax. Post #633.


If you're experiencing difficulty in viewing this video, please enter this address into your browser search box: https://youtu.be/Il_eju4D_TM.  Exceptionally well-produced tutorial from W2AEW on how to use a scope and function generator to measure the length of coaxial transmission line as well as estimate its impedance.  The procedure uses a "poor man's TDR" type of measurement "by launching a pulse into the coax and measuring how long it takes to return after being reflected by the open circuit end."  W2AEW briefly discusses transmission line and reflection theory.  The video is well-paced and easy to follow.  For the latest Amateur Radio news and events, please check out the blog sidebars.  These news feeds are updated daily. You can follow our blog community with a free email subscription or by tapping into the blog RSS feed. Thanks for joining us today!  Aloha es 73 de Russ (KH6JRM).