David
I have an upstairs shack with a balanced feeder needing to pass through
a brick wall into the shack. I have a balun mounted on the outside wall
of the shack, hole drilled in the wall to take the feeder and a metre of
feeder to the K2. I use a 4:1 voltage balun in a plastic "project" box,
home wound and connected to the balanced feeder with brass nuts and
bolts. By using a 4:1 voltage balun (not ideal as a balun...) it has the
advantage of being able to provide a DC ground for both halves of the
doublet.
Maybe your antenna/shack configuration doesn't lend itself to this idea,
but if it does it makes life very simple.
73 Dave, G4AON
K1 #1154, K2 #1892
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