The article recommends using a preamp. Indeed I found the signal levels to be relatively low compared to my BOG setup. With the low signal levels also comes a very low noise floor, so I'm not so sure I need a preamp just yet. I'll make that decision after I've had some time to play with the antenna. I just wanted to get it in the air and see if all the elements worked together (antenna, baluns, feed lines, control box, etc.), and it did rather nicely, well into the lower shortwave bands. I used two runs of Cat 5 of equal length to feed each end of the DKAZ. The Cat 5 then runs into the shack to a homebew control box with a null pot (to fine tune the null) and switch that allows the antenna to be "reversed" and fine tuned in the shack. Now that I tested all of this, and it works(!), I'll need do something with the feedlines to protect them. Cat 5 is a bit fragile to just leave out in the elements, especially during the winter months. So, still some stuff to button up before it becomes a semi-permanent installation this winter, but I'm generally impressed with how it performs.