Tag Archives: T-12HD

Beware the Winds – A Bit of Tower Mischief

A week or so back we had extraordinary winds. Steady 40 mph (65 kph) with 60+ mph gusts (100 kph) for a prolonged period. Local weather recording stations noted occasional gusts much stronger, though I cannot say if my QTH saw those mega-gusts.

Checking on the new log periodic it was still up there (yeah!) and all “looked okay.”

About a week later the beam’s SWR changed and then dropped off. I figured a feedline issue or perhaps a popped lightning arrestor given we had two periods of snowstorms with heaving lightning and thunder.

Yesterday the +4F (-16c) weather improved to a nicer +28F (-2c) and I walked some of our trails. One medium sized tree down that will have to be cleared with chainsaws, and everything looked pretty good.

Just one thing was working in the back of my mind. The log periodic wasn’t pointed in the direction I had left it. And it had moved since the previous day when I had looked at it from the workshop.

Feedlines are likely wrecked as the beam is drifting. My Skyneedle has an indirect rotator system where the rotator turns a jackshaft that is coupled to the mast with a heavy chain.

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How a Tennadyne T-12HD arrives – prior to unboxing

The Tennadyne T-12HD I ordered is now all here. The boxes are nicely marked.

Mine came in two groups, a first group of five parcels and a follow up parcel with the truss kit.

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