Category Archives: K9ZW Shack

Antenna Elements Bugged – Insect Damages to Aluminum Tube

In the takedown of the former Main K9ZW station tower an element from my Tennadyne T-28 LPDA broke in handling!

The inside of the aluminum element was a power like sand, and the inner wall of the element had been reduced to powder.

Broken Aluminum Element

The break was crisp and was more a snap.

So what might have done this?

Continue reading

Building on a Good Foundation – Skyneedle Base

Radio towers need a good base to survive.

This is particularly important with a free-standing tower.

I tend to over-specify the tower bases put in for my towers, and the TM-370HD base follows form.

Skyneedle base – The chain is a positioning chain that will come off after a few rains. The team has it spot on level and worried about upsetting that level if it rained before everything was cured.

Continue reading

The Skyneedle and Flagpole Pours

Dropping Concrete

Foundations are poured. Actually happened a few days ago.

Continue reading

Culverts don’t last forever – Tower Access Road Upgrades

In getting my site ready for the new tower many culverts were replaced.

They had been buried 20 to 30/35 years depending on location, and I am uncertain if all of them were actually new culverts when installed.

Most were pin-holed with rust, but several had started to collapse, and here is an shot of some of the old culverts stacked waiting to be transported to the recycling scrap yard:

Continue reading

Remote Motorized Crank-Up Tower Controls – Well Made Homebrew with the Skyneedle

The second TM-370HD Sykneedle came with an interesting feature – a very professional looking homebrew remote for the crank-up motor system.

Tower Remote

Many motorized crank-up towers use limit switches controlling the motorized winch.

Continue reading

Fan Failure on my Flex-6300 and a Resolution

Unexpectedly one of my stations, the one running a Flex-6300 for the last weeks of operation before being dismantled, shut down.

Restarted it would at first run a few hours until shutting down again.

Going in person to the site I found it was noisy and would shut down within minutes when restarted.

The noise obviously was a bad fan bearing.

Continue reading