Half Wave End Fed Array 40, 30, 20 meters.
Early this morning the weather conditions were ideal for tower maintenance. Cool, high clouds and no breeze. The first order of business was to remove an old tv antenna and 18' fiberglass vertical both of which were attached to a 10' steel mast pipe bolted to one of the tower legs with steel U-bolts. I mounted these antennas about 15 years ago and they have seen better days. We have had cable on and off over the years but I always left the analog over the air receiving system in place. We used it right up until the switch over to digital tv. We now subscribe to satellite service.
Before the removal of the old antennas I had to lower my 30 and 40 meter end fed wires and lay them safely to the side. That's me up the tower climbing with my brand new full body harness with double hook fall arrest lanyard. With this equipment I felt secure and safe and really enjoyed my time aloft. The "Y" lanyard is the only way to climb. One of the self locking hooks is always engaged to the tower at all times.
My excellent ground man Wyatt took these photos. Not to shabby for a nine year old.
The U-bolts were completely rusted but the nuts all managed to break loose except for one in which the bolt just sheared off due to excessive force. My only moment of trepidation was when I had all the bolts off and was supporting the mast pipe with one hand and my right foot. Once the elements of the tv antenna were free from the top of the tower I slowly let the whole assembly tilt and as it went over I gave it a little push and it returned perfectly to earth falling right where I hoped clearing the house by five feet.
Upon lowering the 30 meter end fed I noticed that there was only a few strands of wire still connected at the ring terminal. I snipped the wire and soldered on a fresh terminal and finished it off with several applications of heat shrink tubing to make the wire to terminal connection stiff.
The last item on my to-do list was install a new Radio Wavz End Fed Half Wave for 20 meters. It now occupies the same spot at about 28' that the 30 meter wire used to be tied off. Because I removed the old tv antenna I now could attach the 40 meter wire support line to the very top of the tower. and the 30 meter wire attaches where the 40 was. From the hardware store I picked up a 10" eye bolt and secured the 40 meter support line to it and then simply slid the eye bolt into the steel tube at the top of the tower.
I now have three half wave antennas resonant in the lower end of each of my favorite ham bands. All wires checked out satisfactory using my antenna analyzer especially 40 meters which showed a perfect 1:1 swr for about 100 KHz.
Here's the birds eye view!