VLF,
I just build an arrangement of 2 orthogonal delta loops with a
circumference of 10m. They are not resonated and there is still no
preamp in use, so they are directly connected to the soundcard.
They are made out of CAT5 STP cable, so it is a shielded loop with 8 turns.
Now it is possible to run SpecLab in the Colour Direction Finder mode.
Tonite i will be silent on LF just to see how the wideband windows look
on VLF. That is a new dimension for me, like switching from black-white
TV to colour TV ;-)
Sensitivity is about 15 dB down to the E field grabber on the building.
This loop is 7m above ground but on the ground of the 2nd floor of that
building. Room for improvements. Anyway it is most interesting to see
the different colours of DHO38.
See http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
73, Stefan/DK7FC
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