David J Windisch wrote:
R-f transmission-line swr reduction by what ever means is, I think, akin to
what the local power company accomplishes by hanging lumps of reactance
across its a-c transmission lines, ie, reducing volt-amps-reactive, in its
system.

The sum of the loads on a power line is virtually always inductive
so the power company adds capacitors where they are needed. That is
akin to stubs on an RF transmission line. Guess how long a 1/8WL stub
would be at 60 Hz. :-)
--
73, Cecil http://www.qsl.net/w5dxp



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Hi, Cec:
I don't have to guess ;o)
73, Dave, N3HE

SNIP
akin to stubs on an RF transmission line. Guess how long a 1/8WL stub
would be at 60 Hz. :-)
--
73, Cecil http://www.qsl.net/w5dxp

Cecil Moore wrote in message ...
David J Windisch wrote:
R-f transmission-line swr reduction by what ever means is, I think, akin to
what the local power company accomplishes by hanging lumps of reactance
across its a-c transmission lines, ie, reducing volt-amps-reactive, in its
system.

The sum of the loads on a power line is virtually always inductive
so the power company adds capacitors where they are needed. That is
akin to stubs on an RF transmission line. Guess how long a 1/8WL stub
would be at 60 Hz. :-)

Depends on the velocity factor of the line used to make the stub...

Then there's the old trick of the synchronous condenser for power factor correction.

73 de Jim, N2EY