|Here is the starting point.|
|A half wave dipole is very simple to construct. IAround 10,5 meters of wire in each leg.|
|Temporary location at a height of 2 meters.|
|Up in the tree, at around 25 meters. I took a camera with me, in order to document the views from the fir. There...far down, is my excellent folded dipole.|
|Nort-west view from the tree. Yes, still some snow everywhere, and the leaf trees seem dead...we are in Finland, right?|
|North-east view from the tree. In the summer the views aren't this open because of the leaves. Let's see how it affects the performance of the antenna.|
After the shower I started my radio. The SWR was little less than 2:1. Not much, but anyway I decided to use my antenna tuner. The 40m band sounded crystal clear: almost no noise, only strong and clear CW beeps. And the digimode waterfalls looked brilliant...I compared these to the windom antenna, which is installed at about 8 meters...the difference is remarkable. Boy, I was excited!
There was the Japan International DX contest going on...let's check. I heard many Japanese stations right away. When I swithed back to the windom, the stations went weak again. Well, my antenna looks promising. I answered a CQ from JH4UYB (Japan) and he heard me immediately! He didn't get my call 100% at the first try, but after a couple of repetitions we could finalize the QSO. Obviously this guy is a big gun, with strong power, giant listening and sending antennas, but anyway: my wire vertical dipole works can perform DX. the propagation conditions were not superb at all, so there is still lot to explore with this installation. (Later I might arrange the antenna as a sloper, or even horizontal dipole...let's see.)
Also the Europeans are now delight to work...my fellow hams report strong and clear signals and I hear them clearly. And the waterfall display on the digimodes does not look "noisy" anymore: When switching between the new antenna and the windom, there is a remarkable difference in the noise floor in the specrum view. No windom again on 7MHz, that's for sure!
What about 21MHz?
Guinea-Bissau and the States were worked almost immediately. Just a few QSOs made, but this looks promising. Also, I'd like to check this 5/8 wave stuff with Eznec simulation: what were the theoretical elevation angles with a vertical dipole like this?