In reply to F5VGL:
No not any SOTA qso’s because I got my license just a few months ago and I’ve been busy with other things.
My first ham qso was with this antenna, 5W power 80m band distance 32km and with smartphone using PSK31.
I built one 80m doublet with 13m/100mm(lenght/spacer) ladder line to my home qth, one with 6m/60mm ladder line as prototype and finally built one from lightweight materials and 6m/40mm ladder line for portable use.
I gave my friend the one with 6m/60mm ladder line and he’s been happy with it.
Last week I needed a 10m vertical for emcomm test and I had no time to build anything so I used the 80m doublet, the other station had j-pole.
5W power 10m band and distance was 138km, test was done between two small summits and I pointed the doublets other leg towards the other station.
I calculated that the LOS covered only 100km so I think the doublet works like the antenna modelling software shows.
I’ve had qso’s on all bands except 6m, on low bands it works as NVIS antenna as predicted and same on high bands, the radiation angle is lower.
Like I said, building antenna for my needs was just reinventing the wheel, after all it is just a doublet.
I have to admit that I don’t collect qsl cards, or try to work all the countries etc, my satisfaction comes from testing things and seeing that they work as intended.