Yep Mike, that gain figure looks like slightly inflated DBi, I think a two element quad is a little less than 4 DB over a dipole.Snake oil, besides that antenna gain is not in dB![]()

We have Both worked Mike/nr Boston/K1FNX...He is running a 4 element version on 6m...Here's another Quad option, minus the snake oil, all tubing, 50 ohm feed, 10 or 11m, by a real antenna company, at half the price.
View attachment 76793
https://www.dxengineering.com/parts/iva-18487-0021#overview
0.72m between frames? LMAO.Here's another Quad option, minus the snake oil, all tubing, 50 ohm feed, 10 or 11m, by a real antenna company, at half the price.
View attachment 76793
https://www.dxengineering.com/parts/iva-18487-0021#overview