Hi, all concerned:

The W8JK antenna can keep its same general broadside pattern when the
lengths and spacing vary widely. So, you can build one to fit the space
available, and you need to pay attention only to keeping the 4 lengths of
element-wire close to the same length, and to crossing the phasing line over
between element feedpoints**. It will work well over a 3-to-1 frequency
range.

Element maximum-currents and voltages can be quite high, so use the largest
practicable wire size, and good insulators.

Exact lengths or "resonance" do not seem to affect patterns. It is probably
easier to use open-wire feedline. To make the antenna easier to tune, you
can vary the feedline length between the transmitter and the antenna. Make
your feedline "tune the antenna".

Modeling it with EZNEC shows that, at lower frequencies, it can have more
radiation at lower angles than some other simple antennas at the same height
above ground, and that shifting the feedpoint away from the center of the
phasing line produces a uni-directional pattern.

I hope this helps.

73,
Dave, N3HE

** uncrossed will make it a double-lazy-H ;o)

"wildboy" wrote in message
oups.com...
I want build a 8jk antenna, but i don't find a good project on
internet.
Can anyone help me?