Hi Chris,
Am 11.02.2013 11:15, schrieb Chris:
Hi Mal,
Re your comment:-
Those shouting most and _expression_ opinions
about LF and MF are never heard on the bands.
Surely equal weight should be given
to the opinions of those who just listen or run QRP? I have been
running 1W RF on the band since January, probably well below your RX
threshold, and working a couple of 'locals' regularly. So my opinion
doesn't count in your book?
Of course your opinion counts, as well as the opinion of all active
stations, of course including QRPP stations and listeners. But those
who have the highest motivation to make band plans are either not
active at all (on this band) or spent a few hours during the time the
band was NEW. I know a few callsigns of those who want to set up a band
plan in the background. Never heared them in the LF/MF scene! I asked
them why they want to make a band plan although they have never
been active (RX or TX wise), but i got no answer!
Something must be wrong there.
See the useless ideas for the band plans on MF. Like "472.000 -
472.150 CW Beacons only (IARU coordinated)
"
Questions:
-Why is there the need to have a slot for CW beacons on MF? There is no
CW beacon slot in a bandplan on any other band in the HF spectrum.
-Is 150 Hz BW useful for CW beacons? Imagine there are 3 CW beacons in
150 Hz to the same time. How does it sound when you have a 500 Hz CW
filter?
-"472.600 CW DX Calling", "474.750 CW Calling" Is it
useful to have separated CW calling frequencies? What is DX on MF? Like
on HF, i.e. intercontinental? Who will be able to radiate such a signal?
-"472.150 - 472.300 CW QRSS" QRSS does not need 150 Hz of BW.
Most grabber windows will not even cover that 150 Hz segment, except if
QRSS-1 is meant. 50 Hz BW would be totally adequate. But this slot is
much to close to the CW QSO slot.
Rik has come up with the most
logical suggestion so far. We really do need some sort of organisation
on the band, all be it of the 'light touch' variety.
Agreed. But are there still any open questions? Which modes are done on
MF, i mean REALLY DONE, not theoretically? That is CW, WSPR, QRSS/DFCW
and maybe OPERA and some local AM. No need to regulate sporadic local
AM or SSB experiments. And the CW activity zone is well known by any
active CW station. If not (i.e. for a newcomer), there's not much
trouble to turn over the 7 kHz BW to find an audible CW signal.
The active people know since a long time that CW is done on the lower
band edge, WSPR arround 475.7 kHz, Opera arround 478.5 kHz
Just take a look at
http://www.dxsummit.fi/CustomFilter.aspx?customCount=50&customRange=472
and all is clear about CW!
And just take a look to http://wsprnet.org/drupal/wsprnet/activity and
all is clear about WSPR.
My feeling (which apparently
probably doesn't count) is, modes with long carriers should be near the
band edges, ideally QRSS near the bottom and others near the top.
Filters easily resolve the issue of QRSS being close to faster CW, as
you, Mal, pointed out to me some years ago.
Criticising suggestions is all very
well, but it would be better if such criticism was supported by
reasoned argument or a better proposal.
It counts!
There have been several reasonable arguments regarding band plans on
630m in the past few weeks or months. As a summary, only from my point
of view, the best conclusion ever was very simple: We can all co-exist
without problems there!
73, Stefan/DK7FC
On another point, someone commented
about the 'Subject' in e-mails to this site. I entirely agree with what
was said. Not only the mode under discussion, but it has been confusing
sometimes in the past when the band is not specified either in the
'Subject', or even the content!
Vy 73,
Chris, G4AYT.
|
|
