My antenna is a 43' HF vertical. A proper 1/4 wave vertical would be 500' feet tall! Tiny antennas can hear well on 630 meters; while they don't pick up much signal, they don't pick up much noise either.
I'm using a 160M dipole at my QTH, so I have about an 1/8 wave...
The importance of having a resonant antenna for a band is very evident as I click through other antennas to get to the proper one.
It's quite dramatic. This is why I wonder about the popularity of the G5RV which is isn't really resonant anywhere.