Not mor difficult as with a coax-cable! Even a window-frame means not a problem!

1) For powers up to 250 watts::

• 2 exactly equal lengths of RG-58U. The length depends of the distance from the ladderline-end to the tuner-input connections - measure it as short as possible!
• Place these 2 lengths exactly in parallel.
• Prepare 2 holes of 7mms dia through the window-frame, push the two cables through until the end of the ladderline. Connec only the 2 centerconductors to the ladderline, protect these 2 connections against moisture!!!
• Now hold the 2 cables parallel by applying some pieces of adhesive tape!
• The tuner-end of the cables are prepared by soldering the 2 shields together plus a grounding-wire, which has to be connected to the grounding post of the tuner! The 2 center-conductors to be linked to the output posts of the tuner.

Beispielbild – Platzhalter einfügen

2) For powers higher than 250 watts:

The same as before, but now with stronger coax like RG-213U or better a teflon-insulated coax, which is thinner!

To go through a wall means not big holes, but 1 hole of 20mms dia is sufficient for the 2 coax in parallel, even a third coax for your beam can be placed adjacnt to the 2 ladderline-feed-cables without negative influences

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