Finished "mod" showing 12 and 17 Meter add on verticals

For my mod, I used scrap ½ inch plastic electrical conduit to support the vertical wires (the white PVC pipe or other non-conductive material also works), 2 lengths at 2 foot long each, some #14 wire, (see lengths below), a handful of cable tie-raps, something non-conductive for insulators, (I used scrap plastic tubing), and a 1-1/2 inch hose clamp and some string to tie the insulators to the plastic supports. See additional pictures below:

Bottom showing PVC cross arm support with 12 and 17 meter vertical wires attached and connections to radial ring.

"Top Hat" assembly with cross arm showing support attachments for verticals.


The formula for cutting the wire length is the old standby:
234 / Freqmhz = length in feet.
I used 13 feet for 17 meters
9 feet 5 inches for 12 meters
If you're a perfectionist you may have to tune and prune your lengths for best performance! I'm like N4UJW and can't speak for KK5ID, I'm a bit lazy so..........