Daily Archives: June 5, 2011

Feedline plan

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[Today’s run: Watson Road  3.5 miles]

Today’s picture is of my overhead feedline run from the house to the tower.  I have four 12′ 4×4 posts that I have buried about 40 inches in the ground.  So each is just over 8 feet tall.  I have ropes strung from post to post.  I plan to use the posts to get my feedlines and rotator cable to the tower base.

I am still contemplating how to handle grounding.  I would like to have a good ground system at the tower base then just use disconnects on the shack end.  Right now I only have one lightning suppressor.  So I guess I will put a bit of slack in at that last post and later put in some lightning suppression devices there.

Also, for the rotator cable I am using a run of larger wire between the house and the tower base followed by regular 8 conductor cable up the tower.  So I will have a couple of 8-port binding posts on the first pole and the last pole to transition between the two types of wire.

I need a container for these things on the first and last posts.  I hope to find a rubbermaid type container that will do the job.  It may not be completely waterproof after I poke entry/exit holes in it.  But it will keep most of the rain off.  And if I get something clear I can check it out without much fuss.

I am imagining I will have three RF feedlines:  1 for VHF beam, 1 for HF beam, 1 for HF wire antenna (dipole or G5RV).  I have plenty of the smaller coax cable (rg58).  I have about 50 feet of LMR-400, and I have 200 feet of nice new stuff which is my best shot for the VHF application.

So (thinking out loud here)  I need the new cable to come down from near the rotator to the tower base, have a bit of slack for future lightning arrestor, etc, then go across the yard to the shack entrance, have another bit of slack, then to the entry panel.

Filed under Ham Radio
Jun 5, 2011
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