Hello DK7FC,
I have about 17 acres to play with, mainly woodland but with a 5 acre
field and a big front garden. I thought an aerial antenna would be a
none starter due to the voltages involved, so I'll be looking at a
ground loop for sure. Here's a link to an aerial plan of what I can
use, but I am going to need some basic advice to get going I am afraid
:)
Links to what you have in mind for ferrite cores would assist in me
having a clearer view of what's involved here please. Thanks Stefan.
http://www.chriswilson.tv/newbury.jpg
Sunday, April 14, 2019, 4:40:07 PM, you wrote:
> Hi Chris,
> What are you planning? Building a ground loop into your garden will be
> the only way to put that power into the antenna. At VLF and your E field
> antenna, you would have to deal with several 10 kV if you actually want
to run >> 1 kW. However on a ground loop, the amplifier will be the
> limiting factor :-)
> How much space to you have between the electrodes? All you will need is
> a series C to resonate the antenna.
> Use a big ferrite transformer to match the output impedance to the
> antenna impedance.
> Always use a series C on the primary side of the transformer, if bridged
> or not, to avoid any damage due to an eventual DC-component.
> Use a big ferrite core with just enough primary turns as necessary.
> Now its time for Andy to post the formula again.
> 73, Stefan
> Am 14.04.2019 15:37, schrieb Chris Wilson:
>> Hello LF'ers
>>
>> Having collected my audio amp from Paul Nicholson (VERY many thanks
>> Paul, it's an awesome looking beast.... :)) I would appreciate anyone
>> else getting one posting their thoughts and results matching the input
>> and output for VLF usage. Both for antenna and ground comms usage.
>> Thanks.
>>
>>
--
Best regards,
Chris mailto:[email protected]
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