Originally Posted by
andy2m
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*My Youtube channel is: https://www.youtube.com/@WR8YsDunceCapLabs-e6d - but it has nothing to do with Crossfires."
Thanks for the YouTube channel reference. I started my career with an EE degree from the University of Michigan and my field theory class (including antenna design) was the toughest one in my whole curriculum. Your DCL 430 and 431 are great introductions to the topic. Wish I had them back then! 
WOW, thanks for that! Now THAT is an ENDORSEMENT!