For more info and detailed theory about this versatile antenna see G5RV article in the ARRL Antenna Compendium. This is my first antenna project. I built mine with insulated 12 ga. I don't have WARC capabilities and can't report performance on those bands. The top is kinda touchy when it comes to trimming.
Light trimming is suggested.
Due to the normal high SWR, others have suggested not using a coax feeder with wimpy dielectric, particularly if running substantial power. I LIKE it. One antenna that works well on all bands. FT 101B. Surprising number of contacts from QTHs that would seem to be unfavorable because of my antenna orientation. I'll put out and updated version of this file.