Hi OMs, YLs,
The good thing probably is that the authorities are equally challenged by these
definition and measuring ERP, EIRP or whatever radiates power definition we use.
I remember years back, when Markus, DF6NM, Walter, DJ2LF and me had developed
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 background and
Walter and me did the practical works and test.
Long story short: Walter was asked by the German authorities if we would be
ready to assist them in order to calibrate their equipment by using our method
because their equipment officially was certified only above 500 kHz.
Walters 136 kHz transmitter was activated and two radiation measurement teams,
one consisting of the German Bundesnetzagentur and the other one of us three
hams did parallel measurements. Needless to say that this cooperation assisted
in further improving the already good relationship between our German 'OFCOM'
and the German hams :)
Vy 73
Geri, DK8KW € (still) DI2BO
On 28.12.2012, at 12:40, John Rabson wrote:
> Whatever terminology is used it must be unambiguous, whether or not
> capitalisation and the use of stops conform to conventional rules.
> Unfortunately, governmental-type organisations tend to do things their way*.
>
> The example of P = 5W = 7dBW reminds me of the convention adopted by Arthur
> D Watt (“VLF Radio Engineering”). Where he used non-standard units or there
> was a possibility of ambiguity, he indicated the units used thus:
>
> P = 5[W] = 7[dBW]
>
> I suggest that what really matters is how the radio inspectors measure
> things. When the original MF transmitter at University Radio Essex was being
> inspected by officials from the predecessors of Ofcom, I made sure that our
> test equipment gave the same answers as they would expect using their own
> apparatus.
>
> John F5VLF/G3PAI
> * when citizens band radio was first legalised in the UK, you had to have a
> licence. One of the provisions was “all transmissions ..… must be in plain
> speech only”. A friend of mine, a member of the Society of Friends (the
> Quakers), fell about laughing. He explained that, to the Society, the
> expression “plain speech” meant using the otherwise obsolete words “thee” and
> “thou” when addressing an individual.
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
> <*> To visit your group on the web, go to:
> http://uk.groups.yahoo.com/group/rsgb_lf_group/
>
> <*> Your email settings:
> Individual Email | Traditional
>
> <*> To change settings online go to:
> http://uk.groups.yahoo.com/group/rsgb_lf_group/join
> (Yahoo! ID required)
>
> <*> To change settings via email:
> [email protected]
> [email protected]
>
> <*> To unsubscribe from this group, send an email to:
> [email protected]
>
> <*> Your use of Yahoo! Groups is subject to:
> http://uk.docs.yahoo.com/info/terms.html
>
|
