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1)2 wave vertical dipole

Crawdad said:
Next time time anyone wants to homebrew a monoband Center-Fed Halfwave Dipole you don't have to copy SleazeBay or anyone else. Simply do a little simple math:

468/Freq. in MHz= total length of both poles in feet.
234/Freq. in MHz= length of one pole in feet. Just cut 2 @ this length.

Just plug your favorite frequency into the equation and cut your wire. Depending on your end attachments you may want to add a little to those lengths. 14 or 12 AWG wire is perfect, cheap, low weight and will give you all the <1.5 SWR bandwidth you need for the entire 11m band, plus some.

For Inverted Vs some folks add 5% to those lengths, I found when cutting for several HF monoband band Vs, that subtracting 5% got me much closer to the correct length for easier tuning. YMMV.

Despite the ancient (and incorrect) CB myths about dipoles and wire antennas, you'll end up with a highly efficient, balanced antenna that will outperform most manufactured, overpriced 11m antennas currently available, especially the fiberglass-tube end-fed verticals with a 26 gauge wire inside.

A 1:1 balun/Common Mode Current choke is also fairly easy to homebrew, cheaper and higher quality than many on the market.
They can be made using coax:
View attachment 70016LMR240-Ultra Flex. A little pricey but worth it.

or Bifilar wound with solid copper wire pulled from Romex house wire:
View attachment 70017Stick it in a watertight box, makes a good, easy feedpoint for a dipole. Both are Fair-Rite FT240-43 mix ferrite toroids. $10-$12ea. on Crapazon.

7 3
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What determines the power it can handle?
 
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Emptyharddrive said:
What determines the power it can handle?
Click to expand...
And you don't have to cut to tune, simply fold the wire back on itself and twist it around. Secure with zip ties.
Very good antenna and somewhat directional. A pretty healthy null off each end but great reception broadside to it.
An inverted V shape will do both horizontal and vertical at the same time.
 

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