Monday, November 2, 2009

W8TN's Antenna Project - Phase IV

The last work on the W8TN antenna project was just over 3 weeks ago. A HUGE amount of work was done but we came up a bit short on time to finish the project. Since then the coax feedlines and the control cables have been entering the ham shack through the window. See the photo below for how it looked (click on any photo to view it larger.) This worked OK for awhile but with the nights getting colder, it was starting to become a problem. Also, the need to lift up the coax to allow the wheelchair to roll underneath it led to me not keeping the antenna connected all the time.

So today, Tim, KC8UHE, Mike, KE8V, and Apollo (the Archer), N8RR, came to remedy that problem. In addition to running the cables underneath the house, they were kind enough to erect a KILLER 80-M Vertical down over the hill. The "Archer" brought his trusty bow and amazed Tim with his ability to loft an arrow with great finesse over the exact limb of the tree which was chosen to support the vertical wire. Below (L-R) you see KE8V, The "Archer", and KC8UHE.

I look at these "projects" as my way of helping the hams become "Heart Healthy." The climb up the hill is a great workout!

I cut the vertical portion of the wire for the vertical as well as the two radials to Apollo's specifications of 66-feet. I then crimped and soldered ring lugs onto the wire to make connection to the center insulator easy. Apollo shot his arrow over the chosen branch and pulled up the wire. He says about 5 inches of the vertical and radial wires were used to attach to the insulators. The MFJ-259B meter was put on the antenna and it was deemed DONE. To the right you see the SWR plot of the finished antenna done from the shack with my N8LP LP-100 Digital Vector Wattmeter. The best SWR is 1.03:1 at 3.535 MHz. It is 1.35:1 at 3.500 MHz. and doesn't pass 2.0:1 until you reach 3.656 MHz. I'd say that's going to be one heck of an antenna.

Again I want to express my sincere appreciation to the members of the WVDXA who have taken so much of their time to help get my station operational again. Once the 160-M antenna is pulled back up the tower, I'll be SET. Look out DX, here I come!

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