On Thursday, July 23, 2015 00:10:55 you wrote:

> Hi VLF,

>

> Today I've built a transformer to match the antenna to the PA. This is

> not the ideal solution for QRO / highest antenna currents but i like to

> idea of a galvanically decoupled antenna and TX. Maybe 5 A is possible

> with that arrangement.

> I took 7 ferrite cores in parallel to build that transformer. 39 turns

> primary, 7 secondary. So 1 Ohm is transformed to 31 Ohm. The transformer

> handles (no saturation) 1V per turn at 6 kHz, at least. This should give

> a first detectable signal in the garden loop, i hope.

> https://dl.dropboxusercontent.com/u/19882028/VLF/20150722_134348.jpg

>

> 73, Stefan

>

Hi Stefan

this remember me a "CERN style" balun attached!

I suggest you a QSY near Geneva ;-)

73 de Claudio ik2pii

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Claudio Pozzi - rispondere a [email protected]

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