Hi Grant,
My main criteria was to try and offer suggestions that stay within the
band plan narrow band digital mode sections. Although there are no good
solutions for some bands (80m, 40m and 20m particularly) I think going
below those sections is not justifiable as that would be straying into
CW only sections. The most vociferous objections have been to choices
above the band plan narrow band digital mode sections despite the band
plans not disallowing such operation. In general band plans offer a
dedicated section to a narrow mode, then the next wider modes above and
so on, with no restriction on using a narrower mode in a wider mode
section. Despite this suggestions of using FT4 in an all mode section of
a band seem to be rejected out of hand. Specifically, some comments from
members of the band planning committees have requested that we pick
frequencies *below* the upper limits of narrow band digital mode sections.
On 29/04/2019 14:48, Grant VK5GR wrote:
Given your comments here, I still feel 80m will be a problem on 3590
as it gives the JA community no guidance on where to go. I also think
it is a little optimistic to think that the traffic will stay on 2kHz.
It will spread to at least 3kHz. The use of 3567kHz by several
expeditions for F?H mode despite being outside the band segment hasn’t
been the end of the world. My suggestion is still for 3565kHz – and
then lets start the move through various member societies to push IARU
to widen the 80m digital modes segment down 5KHz to improve global
alignment opportunities with Japan. If not, well 3590 will work (and
at least avoids the WEFAX broadcast transmitter in Sth Korea on
3585-3589kHz).
Unfortunately I made yet another typo with my suggestions above - having
a bad day juggling frequencies here. I meant to suggest 3586 for all
regions and 3568 for R3. That would offer both to R3 users so they can
choose to interoperate simplex with JA, R1 and R2 ops. Those in R1 and
R2 would have WSJT-X default to 3586 and they would have to QSY manually
or set up a split to work JAs down on 3568.
Looking again I wonder if 3568 for R3 and 3575 for all regions might be
better as it meets the criteria of staying within the narrow band
digital mode sections for R1 and R2. The downside is that it will be
close to the OLIVIA, Contestia, etc. folks who have a alternate QRG of
3577 (USB dial) although I don't know if it gets used.
40m, I had like you originally considered going below 7050 but the
desire to create some separation between the RTTY and FT4 contesters
drove my recommendation to go above 7060. Yes it is an SSB segment
(indeed digital voice is marked as a CoA in some regions for 7065) –
but in that sense it is no better or worst than 7090 other than it is
less likely to interfere with international DX SSB and more likely to
interfere with domestic nets. 40m really is a mess and ultimately now
that the world has access (since 2006) to 200kHz of the band it should
be replanned properly, with CW 7000-7040, data 7040-7080 and SSB
7080-7200. Another task to take to the IARU.
Here in the EU there are still many nets etc. right down to the upper
limits of digital mode operation sections as the extra 7100 - 7200
allocation is still shaking out. Any proposed frequency in an all mode
section is bound to land on some claimed territory.
73
Bill
G4WJS.
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