References: <CAA8k23RSBL4tBWvekDNa6BKgSSSCMTBgEsnZ1-U0bGr6VdoRug@mail.gmail.com> <20121227184020.Horde.AW1NLHvPcNVQ3Hn0VJBymbA@posti.anvianet.fi> <CAA8k23SUPC0oE+uhJ5UH8G9nVQqJZMXWSAZ3KNoQaCagN-Vrdg@mail.gmail.com> <20121228123217.Horde.O9DsbOf4KYxQ3XUx6K4ATLA@posti.anvianet.fi> <CAA8k23RcTz_UUq0ycp_KEEX29-f3MFTfgGtFq1FrB6Eugz71_w@mail.gmail.com> <C4E65B96-CC38-433C-AB4A-4F60F196206A@numeo.fr>
In-Reply-To: <C4E65B96-CC38-433C-AB4A-4F60F196206A@numeo.fr>
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From: Holger 'Geri' DK8KW DI2BO W1KW <geri@dk8kw.de>
Date: Fri, 28 Dec 2012 12:55:47 +0100
To: "rsgb_lf_group@yahoogroups.co.uk" <rsgb_lf_group@yahoogroups.co.uk>
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Subject: LF: Re: [rsgb_lf_group] 475kHz EIRP
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Hi OMs, YLs,

The good thing probably is that the authorities are equally challenged by th=
ese definition and measuring ERP, EIRP or whatever radiates power definition=
 we use.

I remember years back, when Markus, DF6NM, Walter, DJ2LF and me had develope=
d our method of measuring e.r.p. on LF using a 1 meter diameter loop antenna=
 and an MV-61 level meter. Basically Markus develops the theoretical backgro=
und and Walter and me did the practical works and test.

Long story short: Walter was asked by the German authorities if we would be r=
eady to assist them in order to calibrate their equipment by using our metho=
d because their equipment officially was certified only above 500 kHz.=20

Walters 136 kHz transmitter was activated and two radiation measurement team=
s, one consisting of the German Bundesnetzagentur and the other one of us th=
ree hams did parallel measurements. Needless to say that this cooperation as=
sisted in further improving the already good relationship between our German=
 'OFCOM' and the German hams :)

Vy 73

Geri, DK8KW =E2=82=AC (still) DI2BO


On 28.12.2012, at 12:40, John Rabson  wrote:

> Whatever terminology is used it must be unambiguous, whether or not capita=
lisation and the use of stops conform to conventional rules. Unfortunately, g=
overnmental-type organisations tend to do things their way*.
>=20
> The example of P =3D  5W =3D 7dBW reminds me of the convention adopted by A=
rthur D Watt (=E2=80=9CVLF Radio Engineering=E2=80=9D). Where he used non-st=
andard units or there was a possibility of ambiguity, he indicated the units=
 used thus:
>=20
> P =3D 5[W] =3D 7[dBW]
>=20
> I suggest that what really matters is how the radio inspectors measure thi=
ngs. When the original MF transmitter at University Radio Essex was being in=
spected by officials from the predecessors of Ofcom, I made sure that our te=
st equipment gave the same answers as they would expect using their own appa=
ratus.
>=20
> John F5VLF/G3PAI
> * when citizens band radio was first legalised in the UK, you had to have a=
 licence. One of the provisions was =E2=80=9Call transmissions ..=E2=80=A6  m=
ust be in plain speech only=E2=80=9D. A friend of mine, a member of the Soci=
ety of Friends (the Quakers), fell about laughing. He explained that, to the=
 Society, the expression =E2=80=9Cplain speech=E2=80=9D meant using the othe=
rwise obsolete words =E2=80=9Cthee=E2=80=9D and =E2=80=9Cthou=E2=80=9D when a=
ddressing an individual.
>=20
>=20
>=20
>=20
> ------------------------------------
>=20
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