Blue H field Ferrite antenna in L or Delta shape?

[nellyt]

Assembly instructions linked from http://en.blitzortung.org/cover_your_area.php
say to put the 2 (or maybe 3) ferrites at 90 degrees.

The picture on the same page http://en.blitzortung.org/cover_your_area.php
shows the ferrites in a 120 degree delta

What should I do?
Have I missed some documentation/description somewhere ?

thanks

Have a look into the Assembly instructions chapter 4.2: Antenna
Scroll down and you will find a picture with 2 horizontal ferrite antennas 90° and one vertical in 90° to them  

Thanks, but I realise you can put two horizontally at 90°, and optionally put a 3rd at  90° to them....
but....
why the picture of three in a delta.? There is no description of deltas in the instructions ?
Which one should I be building
Why the picture of the delta if they are all meant to be at  90°