Thursday, May 12, 2011

ZS6BKW....

As i wanted to make myself a dipole antenna for field-days, i started to ask around and look on websites. I found a nice website after a chat with a fellow amateur who told me about the zs6bkw antenna. This is the link. http://faberg.home.xs4all.nl/g5rv/g5rv.htm

I am not going to explane all about this antenna, cause it is explaned on that page very well....
If you can't read dutch, or the Google translator is not working that well, drop me a note and i can help out.

I did a really quick field day.... lets call it an field-hour instead to check out if it worked.
And i can tell you, its quiet... no noise at all and the antenna worked  promising enough....
I made a quick QSO with a station 3600 km away.... the first try :)

As you can make 2 versions of this antenna, 1 with 300 Ohm ladder line and one with 450.
I made the one with 300 Ohm line.... Why? well.. i thought about it for a while and the actual dipole which you send and receive with is just a bit longer.... my guess.. more line on the dipole might end up with better reception.... But i did not do any calculations on this.... its based on a gut feeling, so no garanties what so ever.

So the measurements are for my ZS6BKW:
Length of the dipole:  2 times 14.05 mtr
Length of the 300 Ohm ladder line: 11.20 meters 



I made my own center part as nothing in the shop was what i wanted. i wanted to have my wires to be centered in  side of my center part.



On the website you can read that is advisable to feed the ladder line into a choke balun. I did this as well. Choke baluns are easy to make. This is mine....



And when it is all set up , it looks kinda like this....




73's
Alex

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