HF Antenna Maintenance
12 April 2020 - 18 April 2020
I had a long hiatus from posting my hobby blogs. My XYL's mother passed away last year and there didn't seem to be any excess time available to both do a hobby and post a blog. Just as things started to pick back up for us and we even bought a new dog the pandemic hit with social distancing, self quarantine and lockdown.
This year Winter's snow load was light, but we still had a several blustery days that took their toll on my 40 meter dipole wire antenna support ropes. I had two separate failures one was the paracord supporting the feed point and the other was one of the mason lines used to tie down the "legs" of the dipole.
This was my second (third?) Winter using these cheap support lines. So these failures were not unexpected. The support trees were Eastern White Pine (State Tree of Maine) The deep corrugated bark abrades the support lines with each wind gust, I decided to buy support rope that was designed for long term outdoor exposure and stop the false ecommunity of continuing using subpar lines.
Brought 500 feet of 1/4 inch Dacron rope. I hope this is about twice the length of what I need to support the antenna as a messenger line. I used my Joplin ARC antenna launcher (air cannon) to get one end of the line up and over the closest pine tree to the eastern side of the house.
I walked the rope end over and threw it up onto the back shed roof. I then used the antenna launcher to bring a haul line over an old snag in the old dog pen.
I then had to go onto the shed roof and haul rope to thread the eastern end insulator, the feed point assembly and the western end insulator. Pulling enough rope to make it up and over the snag limb with an additional 35-40 feet for raising and lowering the antenna to the roof.
I would like to say that things went smoothly but as often the case. If you're on the roof there is a problem on the ground and if you're on the ground at one end the problem is on the other end or back up on the roof. This would have been easier with an additional helper or two. Not happening with social distancing. I did have my XYL act as a spotter with 911 on speed dial. I ended up doing this over the next few days when the temperature warmed up and the wind gusts calm down enough.
I then had to haul up one side of the rope then the other with the XYL checking to see if the dipole and rope would clear the radials on my VHF antenna mounted on the west gable end of the house.
With the dipole raised and the rope ends tied off, I could finally go into the shack and check out the performance. I had lengthen each dipole leg to the length recommended for mid-phone frequency. The best SWR tested was in the lower CW frequencies but it will do for now. I'm tempted to move the eastern leg of the antenna to a tree farther from the house, if I do I'll go for a better tune for SSB.
Until then I can finally get some more use out of my BitX-40.
73 de AB1OP_Ralph
Until then I can finally get some more use out of my BitX-40.
73 de AB1OP_Ralph
