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
>> 
>> 
>> 
>> 
> 
> 
>