[Meteor-Scatter] WSJT : lets think about procedure

[David Butler ( G4ASR )]

Richard,

.... and that's why I have already written the paper for the IARU Region 1
conference in November.
(the cut-off date for papers was end of January by the way.)

Entitled....

PRINCIPLES OF BANDPLANNING -
CONFLICTS WITH EMERGING NARROWBAND DIGITAL COMMUNICATION MODES

...it describes the old convention of describing the 144MHz band (for
example) sub-sections as
EME, CW, SSB etc whereas now we have narrowband digital modes for
weak-signal working
that are appropriate within the bottom 400kHz of the 2M band.

My paper is to redefine the the left hand column of the band plans to bring
it into the digital age so to speak.

I have also written a paper regarding the allocation of  (WSJT) / FSK441
within the 144MHz band.
Other Region 1 socieities have similar proposals. The problem here of course
is that allocating specific
frequencies for specific modes may cause problems as future modes develop.

In my opinion it is best to define a sub-band within each VHF/UHF band for
weak-signal narrow-band
digital communications first and then allocate specifics later (normally by
the mjority of operators).

One point regarding WSJT. Why do some ops use this abbreviation as a
definition of a mode.
For example - 'Tx 1st period 144.370MHz WSJT beaming 090 degrees'.

WSJT is the term for a whole suite of programs.

More appropriately ops should use FSK441 or JT44 to identify what they are
transmitting.

One day it will be so popular that they won't need to use the DX Cluster to
identify what they are doing!!

73
David g4ASR

----- Original Message -----
From: G4HGI <G4HGI@blueyonder.co.uk>
To: Remigijus <r.vaicius@omnitel.net>
Cc: <meteor-scatter@mailman.qth.net>; 144 Topica <144mhzeu@topica.com>
Sent: Wednesday, April 17, 2002 8:50 AM
Subject: Re: [Meteor-Scatter] WSJT : lets think about procedure


> Hi Remi !!
>
> Yes I think you are right a procedure will need to be decided - Joe has
now
> produced the WSJT 200 fully integrated programme so I guess this will
> encourage more people to download it and begin using Meteor Scatter.
>
> WSJT now seems to be so fully embedded in VHF dx operating that I think it
> needs
> to be presented to National Radio Societies (RSGB VERON etc etc) and
> officially
> agreed into a band plan    Question  :-  How do we do that ?
>
> I dont know what it is like in other EU countries but 144  SSB activity in
> UK is probably
> at its lowest level for many years ( apart from contests).
>
> This is because now the " code less " HF  10 watt licence has been
> introduced in the UK
> with a M3*** call  many novice and class B ( vhf only ) operators have
gone
> to HF.
>
> With activity so low maybe now is the time to look again at the band
plan -
> are we likely to see activity levels on SSB of the early 1980's in the
> future  personally I dont think so but I hope
> I am wrong.
>
> We would be looking at a plan something like
>
> 144.000-035  EME only CW
> 144.035-099  Mixed EME /Tropo
> 144.100-126  Random MS HSCW
> 144.127-150  MS  HSCW
> 144.151-190  JT44 TROPO/ EME
> 144.191-210 MS SSB Random
> 144.211-359 SSB MS/TROPO/
> 144.360-386 WSJT
>
> The reason for 144360 as a wsjt calling frequency is if 370  at 26
channels
> it would be a bit
> too near the beacon band  and to be honest I have not heard anyone above
360
>  for a loooong time
>
> I have not tried it but will wsjt decode a received signal 1 khz away from
> another strong signal
> who is on a different 30 sec period ???  I dont know but maybe someone has
> tested it.
>
>
> These are only my own thoughts - with the advent of the wsjt programme it
is
> possible that we could have many new operators trying out Meteor Scatter
for
> the first time and this I think is to
> be encouraged as much as possible.
>
> Best Regards To All
>
> 73
>
> Richard G4HGI
>
> _______________________________________________
> Meteor-Scatter mailing list
> Meteor-Scatter@mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/meteor-scatter