Gray Hoverman TV Antenna Plastic Crafts

The Gray-Hoverman homebuilt TV antenna can be assembled from common plastic plumbing pipe and fittings. Here are some tips compiled from my build of a GH6 antenna having straight NARODs, but these hints can be useful no matter which of the many variations you build. The color pdf drawing I used to build my antenna may be found at this link http://www.user.dccnet.com/jonleblanc/Canada_TV_Stations/Gray-Hoverman/DBGH_VHF_hi_Antenna.pdf. Note the license information printed on the drawing, which is offered free for private use, but commercial exploitation is prohibited.
This is one of several of my Instructables related to building this antenna. To see the others and my related Instructables, click on unclesam in the INFO box at right and repeatedly click NEXT to page through them all. To receive automatic notice about my future antenna construction postings, you can click in the INFO box to subscribe to me. In the final step I include links within Digitalhome.ca that further describe the antenna. At the end I have edited in an assembly photo of the spine for a GH10n3 antenna I subsequently built.

Step 1 The Sharpie Sled

Holes need to be drilled in lengths of PVC pipe that are precisely placed in spacing and perpendicularily, and marking the pipes lengthwise on four quadrants makes that easier. This is best done after a piece of pipe has been cut to length. The pipe is clamped to a flat surface in several places, so that the pipe is in contact with the surface along its entire length. A fine-point marker fastened to a wood block is carefully drawn along the length of the pipe. Locations of the remaining quadrants may be marked using a circle-drawing template. The pipe is then rotated and clamped in position so the marker's point will follow each of the remaining quadrant marks in turn along the pipe's length.

Comments

[crc60]

"which is offered free for private use, but commercial exploitation is prohibited."

The GPL allows anyone to copy, use and re-publish the DBGH_VHF_hi_Antenna.pdf illustration be they private use or commercial exploitation. GPL prevents limitations on who can copy the file. That's the price of using GPL.

Of course, private and commercial folks are also free to use the Hoverman design (patent expired) or the Gray-Hoverman (never patented and published for more than a year). The GPL has nothing to do with this since Ideas, procedures, methods, systems, processes, concepts, principles, discoveries, or devices (as distinguished from a description, explanation, or illustration) cannot be copyrighted.

Ignore those trying to use the GPL to regulate design concepts.

[olivehelens]

PVC fittings need to be drilled in precise locations. I agree with this statement. Please check idccorp.com for more information about PVC Fittings.

[dmonday]

You can check your local home improvement store like menards or home depot and save shipping charges, instead of looking for these common items on the web.