wire spreaders from USA

[rjvalenta]

i am trying to build an 80m dipole in what is 46ft of space, and i have seen various videos of (and my terminology may be wrong, please correct me as needed) what i believe are 'folded' or 'linear loaded' dipoles, made from window-line with the two wires connected at one end to make one long wire, or made with a normal dipole wire that's effectively folded over but still kept separate from the other layers of the fold.

(i hope that description makes sense, see a diagram i found online below)



so to attempt this with 65ft legs in a 23ft space, i will need to fold each leg 2 times and hold the wires in place to keep them from touching. i have seen ideas on doing this that range from cutting up PVC and drilling holes in it, to printing ladder line holders with a 3D printer i don't have...

then i found these: Spreizer SP200



which i believe would totally work - but i only seem to be able to find them in germany. i am completely willing to buy them from germany and wait for them to get here if i must, but...

does anyone know where i can get them here in the US?

thanks,

Richard
N0TZC

 

[prcguy]

Not sure those wire clips are gonna work out as there will be some sideways pulling force on the wires trying to keep the odd shape. The clip ends are going to try and unsnap and I would recommend something that is structurally stronger with a more robust wire attachment. Also, going from a full size 135ft dipole on 80m to a 46ft dipole is going to be very poor performance and the BW will be extremely narrow. There is no magic with linear loading and it will have similar compromises to coil or trap loading.

 

[RFI-EMI-GUY]

These might work for your application as you have three wires. I would be inclined to get some PVC pipe, drill it and epoxy the wires at the pipe for rigidity.

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[prcguy]

If the OP is going to stick with a linear loaded thing you can help retain the shape shown in the picture by tying a small loop knot in the wire a few feet past the inner plastic tube going towards the feedpoint and tie a string from the loop knot to the lower part of the inner plastic tube. That will stretch the zig zag wires and help them keep the intended shape. I do this with fan dipoles, otherwise the stacked wires just want to lay over into a bundle.

 

[merlin]

Back when I had real estate for such antennas, I put together a terminated 3 element folded dipole for broadband.
The spacing was 16 inches. I found a sheet of discarded lexan and cut strips down to the needed spacing, drilled holes and fixed the wires in the holes. If my PDF is small enough to post, it shows several configurations that are proven effective.
My issue was getting the T3FD high enough so I didn't have impedance problems.

2.29 MB file on MEGA

mega.nz