Hi Dimitris,
Do you have a photo showing the coil in its position?
What are the ground losses, about? R coil = 9 Ohm with that Q and XL....
Litz wire helps of course, if you have enough...
73, Stefan/DK7FC
Am 15.02.2013 01:31, schrieb Dimitrios Tsifakis:
Hello group,
I would like to increase the Q of my loading coil for 475 kHz. . It
consists currently of a 20-litre plastic bucket with standard house
240V electrical wire (with PVC jacket). I measured the Q and found it
to be about 220 (XL is about 2 kohm). I do have some Litz wire I can
use. I also have a piece of large diameter (25 cm) storm water pipe,
which I think is made of PVC. Would you recommend using a PVC former
or should I look for a more exotic material (glass/porcelain)? Would
you think the inter-turn capacitance is very detrimental and some
exotic winding technique would yield better results?
I understand that ground losses are bigger in my case than the
inductor losses, but I would like to address the inductor first.
73, Dimitris VK1SV
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