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And then there were cables - er, conductors...
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<blockquote data-quote="Shonver" data-source="post: 26084" data-attributes="member: 34"><p>...as for the RF signal... it runs inside the (hollow) waveguide, not through the metal. Apparently, a 90 degree bend is bad design unless the utmost care is taken to address mismatching/standing waves... more trouble than it's worth. Power transmission in the region of 8kW is common, and ingress and poorly-chosen/designed tight bends can set up standing waves; arcing can occur. This can cause a hot spot. Resulting expansiion and cooling can induce stress cycles in the metal.</p><p></p><p>Furthermore on the right angle bend... reflected power can destroy an expensive transmitter/receiver.</p><p></p><p>This from one of the junior engineers who happened to stroll into the office at just the right time...</p><p></p><p>Edit: the 45 + 45 bend and curved bends are preferred.</p></blockquote><p></p>
[QUOTE="Shonver, post: 26084, member: 34"] ...as for the RF signal... it runs inside the (hollow) waveguide, not through the metal. Apparently, a 90 degree bend is bad design unless the utmost care is taken to address mismatching/standing waves... more trouble than it's worth. Power transmission in the region of 8kW is common, and ingress and poorly-chosen/designed tight bends can set up standing waves; arcing can occur. This can cause a hot spot. Resulting expansiion and cooling can induce stress cycles in the metal. Furthermore on the right angle bend... reflected power can destroy an expensive transmitter/receiver. This from one of the junior engineers who happened to stroll into the office at just the right time... Edit: the 45 + 45 bend and curved bends are preferred. [/QUOTE]
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And then there were cables - er, conductors...
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