Mike, a different question than you asked, but if you have two trees or other supports at 65 feet or greater and more than 130ft apart, I think an 80M dipole strung between them will be a better all around antenna than a vertical. If you can get to 80ft or 100ft the dipole was be markedly better. If you only have a single support an inverted V will be almost as good.
This same antenna, you can tie the feed line together at ground level and feed as a Marconi T against ground on 160M. Back to your original questions: As to differing bandwidth claims, they must be using slightly different standards for bandwidth. As long as you have more than a couple radials, I would not worry at all about an asymmetrical radial field. Put down as much copper in whatever directions you got. It's the guys with only 1 or 2 radials that have to worry about tuning. Tim N3QE > On Jun 12, 2017, at 11:29 PM, Mike Paskeuric <mikepa...@gmail.com> wrote: > > Hey Topbanders, > > I was looking to buy or make a mono type 80 meter antenna for DXing. > > I was wondering couple things. If I make a full quarter wave vertical WIRE > in tree 65 feet tall and see DX Engineering verticals claim 65 foot tall > but wider bandwidth. What is their secret or just advertisement? > > Second question, I understand more radials make vertical better, but what > happens if one side half or one third the length radials due to space in > yard are shorter by 20 to 30 foot? Is it noticeable enough to buy a > vertical in middle of yard instead of wire in tree towards side of yard? > Dollars verses radial lengths. > > Third and last question, can some of the radials, quarter of them, > overlap with radials of another antenna (160M mono vertical Gladiator > antenna)? Would it affect the performance noticeable. > > I don't need long answers, just something to help out a bit. > Not sure what antenna to buy or make yet. I am in 2 and half acres and can > maybe stretch in field next to me some with no one knowing. Not many 80M > momo antennas to choose from. > It is a late Summer or Fall project so time to think. > > Mike > n0 odk > 73 > thanks for suggestions gang. > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband