I have a copy of Tagg's book annd find it very useful.
John F5VLF
On 12 Feb 2011, at 03:28CET, Rick Wakatori wrote:
> For your information,
> We use an equqtion for calcurate earth resistance which was proposed
> by G.F.Tagg (Geoge Frank Tagg) in Switzerland.
> Some of us have measured it by their own earth resistance meter
> (Example : Frequency at 500Hz, Voltage at 100V) to reduce the earth
> resistance as low as possible even in low frequency.
> 7L1RLL Rick
>
> On Thu, 2011-02-10 at 14:43 +0100, Jurgen Bartels wrote:
>> Stefan,
>>
>>>> rod that can be pulled out with ease in spring when the season is over.
>>>>
>>> Which season is over in the spring? VLF? Or LF? Theoretically its never
>>> over although the records are done in winther of course. If people stay
>>> QRV it won't be over! :-)
>>
>> My main interest is MW-DX, VLF is just a side interest.
>> The beverages will be taken down when the cattle get out and the land is
>> used
>> by farmers around March.
>> Around April/May my interest changes to TV/FM DX. So the MW season will over
>> soon, and that's good, as I'm slowly getting tired :-)
>>
>>> What is your earth loss resistance when transmitting on your LF antenna
>>> and which antenna current do you achieve? Or don't you have a TX system
>>> at all?
>>
>> No TX only Rx
>>
>>
>>
>> Jurgen Bartels Suellwarden, N. Germany
>> hor. Antennas: 11-ele 45-87MHz 13-ele Band-III, 48-ele UHF, FM: 15.11
>> TV: Winradio G305 / Fly2000 + video noise filter & variable IF BW
>> FM: Downconverter + Perseus + Speclab as WFM demod.
>> MW: staggered 300m Beverage 320°, 30 x 4m EWE 320°, Winradio & Perseus
>> http://dx.3sdesign.de/tv_offset_list.htm
>> http://dx.3sdesign.de/station_list.htm
>>
>> http://fewo.3sdesign.de - Vacation home: DX right at the Northsea coast
>>
>>
>>
>>
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