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From: John Rabson <john.rabson@numeo.fr>
In-Reply-To: <1297477712.6197.14.camel@vaio3rd>
Date: Sun, 13 Feb 2011 14:52:40 +0100
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References: <4D53AE84.6932.312944@jurgenb2.3sdesign.de> , <4D53D965.3090003@iup.uni-heidelberg.de> , <4D53DD99.6000105@iup.uni-heidelberg.de> <4D53F980.14834.1561492@jurgenb2.3sdesign.de> <1297477712.6197.14.camel@vaio3rd>
To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: how to get ground rod ressitance low
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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
>=20
> On Thu, 2011-02-10 at 14:43 +0100, Jurgen Bartels wrote:
>> Stefan,
>>=20
>>>> rod that can be pulled out with ease in spring when the season is ove=
r.
>>>>=20
>>> Which season is over in the spring? VLF? Or LF? Theoretically its neve=
r=20
>>> over although the records are done in winther of course. If people sta=
y=20
>>> QRV it won't be over! :-)
>>=20
>> 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=20
>> by farmers around March.=20
>> Around April/May my interest changes to TV/FM DX. So the MW season will=
 over=20
>> soon, and that's good, as I'm slowly getting tired  :-)
>>=20
>>> What is your earth loss resistance when transmitting on your LF antenn=
a=20
>>> and which antenna current do you achieve? Or don't you have a TX syste=
m=20
>>> at all?
>>=20
>> No TX only Rx
>>=20
>>=20
>>=20
>> Jurgen Bartels  Suellwarden, N. Germany
>> hor. Antennas: 11-ele 45-87MHz 13-ele Band-III, 48-ele UHF, FM: 15.11=
=20
>> TV: Winradio G305 / Fly2000 + video noise filter & variable IF BW
>> FM: Downconverter + Perseus + Speclab as WFM demod.
>> MW: staggered 300m Beverage 320=B0,  30 x 4m EWE 320=B0, Winradio & Per=
seus
>> http://dx.3sdesign.de/tv_offset_list.htm
>> http://dx.3sdesign.de/station_list.htm
>>=20
>> http://fewo.3sdesign.de  - Vacation home: DX right at the Northsea coas=
t
>>=20
>>=20
>>=20
>>=20
>=20
>=20
>=20