Your link is dead but I assume you're talking about this?
And if so then yes that's a no-tune unit. The ones that tune literally have a knob where you need to dial in the frequency of use to make it resonate to the wire. Nothing wrong with the no-tune types but as I said they have more RF loss because they are wideband use. They will work almost as good as an ordinary middle fed dipole, and will outperform any smaller whip type antennas not to mention durability because it's just a wire you need to get up in the air.