[Lf] [Fwd: LF: IEE Paper]

[Andre Kesteloot]

Talbot Andrew wrote:

> I have been asked by RSGB to write a paper for a forthcoming conference
> "Getting the Most Out of the Radio Spectrum" sponsored by the Institute of
> Electrical Engineers (IEE), to be held 24-25 October 2002 At the IEE, Savoy
> Place. London.
>
> The paper (to be presented as a poster session) will be entitled  "Amateur
> use of novel signaling methods at low frequencies" and I will cover the
> means by which we have used very low bandwidth signalling methods to
> overcome problems with low powers and inefficient antennas, and making use
> of the stable path at these frequencies for long distance signalling.
> Starting from SlowCW through 7FSK / Jason and WOLF.
>
> As it is a poster session, pictures will go down well so some SMT Hell
> screen shots will appear as well.
>
> What I would like some help with is this:  During the transatlantic tests,
> weren't various discoveries made about the stability of the path which were
> related to ionospheric stability ?    I believe some ideas were discussed
> regarding skywave propagation and different modes.   Has anyone got a
> summary of what was discovered - and could this be described as hitherto
> unknown information.
>
> It would be particularly rewarding and do our service a lot of good if it
> could be shown that amateurs have made some new discoveries and research in
> this area, or have tried techniques that have hitherto not been used - such
> as back in the days of the 1920s when the commercial interests were
> abandoning LF for HF.  The paper 'has to refelct the title of the
> conference' so I need to demonstrate that we are making the most of the LF
> bands.   Comments by the reviewers of the abstract are quoted below :
>
> "Paper to give conclusions as to the way forward for further development of
> this technique"
>
> "Use by the amateur service of low speed signalling at LF to develop
> signalling protocols and explore propagation phenomena. Interesting research
> at increasingly unused frequencies.  Such research may help to characterise
> these frequencies and expand their potential use.  It is anticipated that
> this will be the thrust of the paper. Propagation events are noted, it is
> asked that these be characterised, and considered for potential uses, and
> how predictable they currently are. It is requested that any potential
> applications that have been evaluated or considered are covered in the final
> report"
>
> Ideas please.  The deadline for submission of the paper is 13 August so
> there are a few weeks yet..........
>
> Andy  G4JNT
>
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