Hi Stefan
I don't really like the idea of keeping permanent long wires installed here. Last summer I had the horizontal loop and we had
an small storm. A lighting striked in the area. Not in my building or any other towers around. Probably a few km away
That was enought to damage the speed control board for the motor moving the vacuum capacitor. And also a USB hub was
damaged getting some ports faulty
Having just two sloppers as top load capacity I can take all the wires down. They are hanging from the 11m giberglass pole
of the (now unused) Ultrabeam vertical antenna using a pulley in the top of the fiberglass pole. So it is very easy to fold it down
like a flag and making it to electrically disappear
May be I can use the dynamic antenna as high voltage variable capacitor. The inner conductor is deployed inside the fiberglass
and lenght adjusted with a stepping motor. In fact I'm using this to trim the antenna at MF. But actually the inner conductor is just floating
Even floating, there is a remarkable effect in the resonance of the antenna. I can connect it to PA ground and make a test
The capacitive effect will be higer.
As I'm not using high power, hope the dielectric can deal with some Kv ;-)
Some pictures about the small coils used for the VLF test. This was a test only for antenna analyzer
And what I got at 10800Hz
This is a "family picture" of the coils.It was taken in MF configuration. Only the first L1 coil connected to antenna, which is the wire
going up at the right side
