|Subject:||Re: LF: Another impedance matching question. Paul's audio amps.|
|From:||DK7FC <[email protected]>|
|Date:||Sun, 14 Apr 2019 17:40:07 +0200|
|Dkim-signature:||v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1555256408; bh=cYOoJ+4zVe89SzzXAAWj0y1frfQTl8rIbPiuVvVjIAk=; h=Date:From:To:Subject:From; b=rsrt6Rm57zDEITgAB/ylTzxi9kXB+/votgf9cSYl2qIWc8FZYsFXobz+YppA00UZt IWwRGFElhk+ppngxOsOwlrYhpq1eajxSTD0xZNvglNlzk/lKJfnwhW8SWZ1A9/VIvl CMaa92NUKtsKuMcbX16iiQgg/8Zn92HYDCNKj7YyuW5TfLhrko+m4OCKhrv79ooczt 9mepUyXl5EvHU7nJ3Bwy4wJSM+alfHoqqbP3CXfL/+6eM6VAwjTggs3W4OGpgy0m1X PcWaWAOt8cmazOmpVwogJv/6NGMGWfpK6fa1FE9liPpSOh/mkGsh0S/qLAdBkm3WzB G8uer6Fj1BBsQ==|
|User-agent:||Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:220.127.116.11) Gecko/20100227 Thunderbird/3.0.3|
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.
|<Prev in Thread]||Current Thread||[Next in Thread>|
|Previous by Date:||Re: VLF: Weekend on 8270.0025 Hz, Markus Vester|
|Next by Date:||Re: VLF: Weekend on 8270.0025 Hz, DK7FC|
|Previous by Thread:||LF: Another impedance matching question. Paul's audio amps., Chris Wilson|
|Next by Thread:||Re: LF: Another impedance matching question. Paul's audio amps., Chris Wilson|
|Indexes:||[Date] [Thread] [Top] [All Lists]|