|Die Hohlstunde © Joachim Lehrer|
After the installation of the new balun I was kind of happy that I found a solution. But Germany is not far from the Netherlands and Rob with his HyEndFedAntennas was watching my blog. And his statement came down on me: "The Lower Bands do not look good. You must try to install some more wire." But how could I add wire to a crazy antenna wound around several trees even if they had no leaves in the wintertime? But an advice without concrete help would be counterproductive. So Rob added a picture which I do not want to hide before your curious eyes.
|© Rob Eke|
I knew that things will get time consuming and I wanted to be sure that my next measurements would be more standardized. So I asked my friend Werner (DL5SBT) if I could borrow his trusted antenna analyzer (MFJ 259). Of course this was no problem (Lets call it ham spirit) and I could start testing.
I repeated the measurements with the new device and considering the fact that "Wer misst, misst Mist" the results were comparable. Additionally I found the only true resonances point of my beloved wire: 16200 kHz. This could not be real for I was sure that the original wire was about 12m long. But I had to accept reality. 16200 * 0.48 = 8.88 m I will call it the electrical length of the wire. So I added as shown above 1,35 m of wire and the resonance went up to about 14060 kHz. Well done. Well part of ...the other SWR readings were out of tune. But Rob gave me his measurements so I made additional wires. So this is what I got.
In the Netherlands they have huge farms where they grow up red water bombs. They are called tomatoes (Uuups, I could not resist ;-)) I think that there are now a new and in every sense better kind of farms over there: They are called antenna farms... The reason for my speculation: Rob wrote another letter, that they had an idea of improving their design of the Unun balun and I would receive in exchange an improved version of the balun. So there will be another story to come.
All in all: Ham spirit is a living part of my life and Werner has to wait a little longer until I will give back his antenna tuner.
And have a look at the ongoing story.