With that in mind let me introduce you to the hardware at Radio Arcala in Finland.
That tower is topped with two antennas (which are constructed of towers themselves): the bottom one is a three element yagi (directional antenna with gain) for 160 meters while the top is a four element yagi for 80 meters. Now, remember, the length in feet for a half wave dipole is 468/f with f in MHz. That says the elements of the antenna need to be 134 feet tip to tip for the bottom end of 80 meters and 260 feet for the bottom of 160 meters. And they need to be spread out with about 2/10 wavelengths between the elements (that number varies with the antenna design; it's very approximate to give an idea of size).
According to their website, the vital stats
- Tower height: 100 meters or 330 feet
- 80 m beam 90 m (300 ft) long
- 160 m beam 80 m (270 ft) long
- Total weight 39,600 kg (80,000 lbs)
To give you an idea of the scale up close, here's a section of the 160m antenna where one of the elements meets the boom that holds the three elements. With a prop for scale.
This is tower number 7 of 7 at Radio Arcala. All privately funded, lots of volunteer work, designed and built by a group of hams who wanted the best signal in the world on those two bands.
In the comments to that video, one says, "now collapsed due strong gust wind" dated six years ago. I guess that means it stayed up a few winters.