Hello to all,
In last article i’ve installed a wire antenna for ham radio called « end-fed 40m», i purpose here an improvement, after the last storm,
(Louis in France) destroyed coaxial line of the end-fed. So i decide to update it, with new balun 64:1 (from BH7JYR change 150 to 400w model).
I don’t change the wire part, simply exchange the balun. I’ve also improved the coaxial line by adding a « ferrite » with 10 turns of coax on it (with ~60cm distance).
I also improved the line by adding a support for the ferrites and the coaxial cable which supports the weight of the assembly which avoids pulling on the coaxial cable.
The last improvement is a « new » system that i’ve discoved is to use a « delta loop » configuration to replace single wire system (4% of 80m band here),
it really improved the antenna system (voir photo).
Here is the results table :
Here is a small photo :
73 to all,