HW-40HP HF Off Centre Fed Dipole

Getting on the HF bands requires a decent and longish antenna, general horizontally fitted. I enjoy using my Band Hopper II when doing SOTA work or just our portable, but i wanted to be able to access the 40m band at home.

I had fitted a collinear to the side of my house using a short pole and T&K brackets. I didn’t want the feed point cable to run down the middle of the garden, so i needed the feed point to attach to the pole mounted on the T7K brackets.

After some research i chose on the HW-40HP off centre fed dipole from M0CVO Antennas. Which arrived this morning along with some RG8X cable i had ordered to fit to it.

Not wanted the weather to stop me i chose the best way to fit it to my house and then to the end of my garden. The shorter 6.4m side of the dipole slopes slightly down the side of my house and is secured onto a tie end using nylon “para” cord. The longer 13.8m then goes from the pole to a tree at the end of my garden, again secured with nylon cord.

I cable tied the feed point balun to the pole and attached some cord to a ring at the top just in case the cable ties give way.

I used self amalgamating tape on the SO239 joint, which may need to be checked as we had snow over night and there was a bitter wind blowing and my fingers weren’t functioning correctly, i should have done the tape at ground level, but then it may have been awkward to fit whilst up the ladder.

I have followed the route of the other feeder back into the room where my radio is, i have yet to get a hole through the wall though.

Matt - April 11, 2013 - 12:09 pm

Have you had a chance to try it out yet? I would be interested in your results.


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