Helper Donkey assists with Back-20 Portable Ops - testing the 45 ft Inverted-L, 4 X 45 foot radials.
Helper Wife smacked the tennis-balled end of the inverted-L up into ideal position with her tennis racket!
Happy to have made a few 1 Watt 80 M QSO's with my Pixie-based system, including homebrew QRP Base Matching Unit to mitigate impedance extremes, and QRP T-Tuner and SWR bridge. Operation on the higher bands is no problem as well - made a few DX contacts on 40 M and 20 M with the IC706.
4 radials was about the minimum I would recommend - it's about 3 or 4 dB down from the 10 or 15 radials that make a more efficient system. Aas we get down to 1 "radial", efficiency drops to a good 12 dB down, or about 2 S-Units down.
The 1 "radial" system is of course why the typical sort of hodge-podge "end-fed" with one of the magic counterpoise wires (or just using the coax as "counterpoise" is such a poor choice for low band operation - it's really no more than an inefficient short radiator with an even shorter single "radial".
More important that just some anecdotal "I made some contacts" statement is the actual data.
The 45 ft Inverted-L radiation patterns, SWR, and Base Matching Unit considerations are discussed here ====>
End-Fed Inverted-L, 45 ft version, Elevation and Azumith Radiation Plots
End-Fed Inverted-L, 90 ft and 45 ft versions, Feedpoint Impedance and SWR
Why we use a Base Matching Unit (BMU) with End-Fed Verticals and Inverted-Ls