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Topband: RF resistance of wire

To: <topband@contesting.com>
Subject: Topband: RF resistance of wire
From: richard@karlquist.com (Richard Karlquist)
Date: Tue, 31 Jul 2001 20:44:57 -0700
W8JI:

>In amplifier tank circuits at HF carrying high current, braid from RG-
>8/U will overheat and melt while #14 tinned buss wire will barely get 
>warm. If you simply tin the length of braid making it one conductor 
>(of mostly lead) the problem disappears. That's a remarkable 
>difference.

Not trying to argue with you, but a dumb question is:
how come the braid isn't lossy when it is still part
of the coax, but suddenly becomes lossy when freestanding?

73,  Rick  N6RK







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