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Here's my "attic" DX-CC in an inverted V configuration supported by a few shortened 31' Jackite poles.

The feed point is about 45 ft above the back yard and the spreaders extend 60 ft, nearly the width of my property. This makes it a fullsized 40m inverted V with ends around 25 ft above ground.  The 80m sections of the DX-CC hang vertically from the ends of the spreaders.  No ladders were used in its construction.

----

Ok so I admit it, hanging out of a window to work on an antenna is no fun.  Overall the old design worked well enough but had a couple of problems.  The vertical jackite pole at close to 20ft and mostly unguyed wobbled a bit in high winds.  The heavy DXE current balun at the feedpoint did wonders for my RFI issues but added a bit to mechanical issues.  The whole setup surrived a New England winter with only minor damage.  Somehow the spreader to the right snapped about where it leaves the picture.  It was during a heavy ice and wind storm.  I was expecting problems with the vertical.  My guess is that there was nothing at the end of the jackite pole to keep it from swinging back and forth in the wind.  It finally hit the house hard enough to snap.  After replacing the broken section I added a piece of 1/8" dacron line to the end and teathered it to the fence below.  

Wanting to experiment with more antenna designs I came up with an idea to build a strut channel trolley track that runs 25ft from the small roof above the kitchen buildout all the way to the peak of the main roof.  With a pulley at the top and a suitable trolley, I could do my antenna work form the small roof, attach it to the trolley and hoist it to the peak. It sure sounded crazy enough at the time.  After playing with it a bit I'm starting to think it wasnt all that crazy afterall.

Here's my DX-CC on a trolley at the top of the track.

and again at the maintenance level

Some construction details... the pully at the top

some trolley wheels

Note that the trolley track stops about 5ft from the bottom where a seperate peice of strut channel is bolted to the back of the track.  This lets the trolley drop out of the track for easy replacement or maintenance.

 

a bracket in the middle

 

the trolley with three jackite poles

and the dock cleat at the bottom

What could possibily go wrong?

Let's just say that adding this device made me feel a bit more comfortable when raising and lowering the trolley.

A small battery operated drill and 60 seconds is all it takes to move the trolley from the bottom to the top.

 

8496797 Last modified: 2017-12-06 21:12:47, 3614 bytes

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World Continents Award#16135
Granted: 2016-12-21 17:30:04   (K1DBO)

Endorsements:
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DX World Award#4870
Granted: 2016-12-21 17:30:03   (K1DBO)

United States Award#2715
Granted: 2016-12-21 17:30:02   (K1DBO)

United States Counties Award#1944
Granted: 2016-07-20 00:56:04   (K1DBO)

Endorsements:
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Grid Squared Award#4374
Granted: 2015-02-23 04:25:02   (K1DBO)

Endorsements:
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  • 5 Band Mixed
  • 10 Meters Mixed
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    40 Meters Mixed
    80 Meters Mixed
  • 20 Meters CW
  • 40 Meters CW
  • 20 Meters Phone
  • Mixed Phone
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