A Vertical Dipole for 15m

Sometimes a simple construction project can be fun, I mean you cannot always be knee deep in solder, resistors and capacitors. Sometimes you find a need that needs fulfilling even if its just a boring antenna.

Next weekend (At time of this post) I am partaking in a WWFF VKFF mass activation weekend and working dx is going to be a big part of my strategy for the 8 parks i will be activating over 3 days. So i thought lets go vertical and lets make it a dipole so there are no stupid radials and counterpoises to contend with.

I wont boor you with formulas and measurements, i am pretty sure you all know how to google a frequency length calculator to make a dipole, but rather just to show you how i went about making this and the results i achieved.

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I constructed a T out of some old conduit i had laying about, this is to get the feedline coming off at 90 deg to the antenna for 500mm.

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The feedline should come off the T at a 45deg angle to the antenna, i do not have the room to do that at home, this results in a narrower bandwidth for the band in use.

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The antenna was a little long 5cm in fact. it has since been trimmed and is now swr of 1.5 or less across all of 15m

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The ultimate test is what it does on the air. A quick test on Reverse Beacon network showed that i was being heard in places on this antenna up to 10db snr higher than the 40m dipole i use at home. And for those China stations, it meant being heard rather than not being heard. All in all i am happy with how things have turned out and i look forward to getting this baby in the air next friday and working some DX.

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