Do you have info about this 40′ tilt-over crank-up tower?


This is an old tilt-over crank-up tower that I hope to install one day at ZL1NZ.

It is very ruggedly built of galvanised steel (see photos below).

The drawings above are the only technical information I have for it, so I would love to hear from anyone who recognises this type of tower and can provide further information about it. (You can click on the drawings above to enlarge.)

According to the drawings, it also came in a 50-foot version, so clearly it was commercially produced.

I have an engineer’s design certificate for it, issued on 21/11/1975 when it was being installed in Onetangi on Waiheke Island. Also a consent from Rodney District Council from 8/11/1993 for its installation in Whangaparaoa. But unfortunately no drawings of the installation.

In particular, I need drawings or specifications for the foundation.

Many thanks for any assistance you can offer.


amateur radio tower
Lower portions of the top and bottom sections (with mast in between) showing the tilt-over arrangement.
amateur radio tower
Upper portions of the top and bottom sections.