That 'reference' was more like an opinion than a fact.
A voltage balun is designed to be connected to the dipole at the voltage node where high breakdown insulation is required and smaller conductors may be used. A current balun is designed to be connected to a dipole at a current node where lots of insulation is unnecessary but larger diameter conductors are a must.
People (mostly hams) really confuse the two, and some believe there is no difference. Usually the same kind of 'expert' that calls Heliax 'hardline'. Everyone who knows anything about radio knows that hardline comes in sections and bolts together. Heliax is semi-flexible coaxial cable, usually with a jacketed corrugated solid shield. Hardline has no corrugations and connects using flanges for the outer and 'bullets' for the inner conductors.
73, TS
We are going to have to agree to disagree on some of this ... I don't have time to wage a full-scale war on this, nor would if be worth my time (there isn't enough time to right all the wrongs, the wrong headedness and stubbornness in this world).
Let's just say EVERYONE has their fair share of misconceptions on this subject.
And - if push comes to shove, I'm the guy who
invented the 6M Heliax duplexer when the 'consensus' said it couldn't be done ...