333 / | HD | WAVE TRANSMISSION LINES AND NETWORKS |
1 | DF | PLURAL CHANNEL SYSTEMS {4} |
100 | DF | .~ Having branched circuits {6} |
132 | DF | .~.~ For providing frequency separation {2} |
134 | .~.~.~ Utilizing long line element {1} | |
135 | DF | .~.~.~.~> Including waveguide element |