Thanks to KJ4KAF for this alternate way to run 450 Ohm ladder line through walls and building foundations.
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This is post 2737 in a continuing series of simple ham radio antennas.
Here are some comments from KJ4KAF:
This video is about my balanced feed line that runs from upstairs to downstairs and through concrete block foundation.
Thanks for joining us today.
Aloha es 73 de Russ (KH6JRM).