[Lf] more on broadcasters concerned about ADSL]

[Andre' Kesteloot]

Andy Talbot wrote:

> The broad spectrum of opposition mentioned has really come about because of
> the 'Expert Group' originally set up between all interested parties when
> Power Line Telecomms was being proposed.  The group was started by the RSGB
> getting in touch with the RA and interested parties and as everyone knows,
> PLT has fortunately, and largely as a result of the groups working, been
> killed off in the UK - although various overseas groups are still thinking
> about it.  I am a member of this group, not in an RSGB/Amateur radio
> capacity,  but to protect Defence radio interests which in some ways are
> similar to the amateur ones.
>
> The work of the group has now moved onto specifying emissions of any wired
> data systems that may radiate and at the moment are considering the band
> 150kHz to 1.6MHz which of course covers ADSL.  There is a discrepancy
> between radiated field levels that proponents of ADSL are prepared to commit
> to, and what the radio users in that part of the spectrum, chiefly BBC and
> Aeronautical Navigation, are prepared to accept as to what constitutes an
> interfering level.   When this issue is finally settled, radiation at
> frequencies in HF will need considering and we will need to be more vigilant
> than ever to protect the amateur bands.
>
> Andy  G4JNT