WARNING!
<quote>
- Alarm messages in the DX Cluster Network
Very good idea! Can be implemented immediately for no cost, as such an alert
can be initiated by any operator with internet access and it is supposedly
effectively alerting at least all multi-op and assisted op participants in a
contest.
</quote>
No, it isn't that easy. the one example i saw would not propagate to all
users, it probably wouldn't even get to many nodes, and if put in on the wrong
source wouldn't get to most of the active contesters on the cluster network.
To get past node and user filtering in an organized way it will take some
testing and maybe the cooperation of all the world's sysops... something that
is not easy to do. also it would have to be something that would be
intuitively obvious as an emergency frequency to everyone involved. and it
would have to be refreshed frequently, during contests many users have very
short lifetimes in their bandmaps. but, it couldn't be refreshed too
frequently or the cluster dupe filters would take it out. this is a problem
that caused what would seem to be a perfect fit for the cluster network for
emergency communications, the wx announces being used for severe weather, to
completely fail. too many users and sysops just filtered them out because they
thought it was noise... i will tell you now that if such a mechanism were
abused, say by the 14300 daily nets, to clear their frequencies that it would
end up being filtered out at many nodes immediately, so tread carefully and get
buy in from as many sysops as you can before trying to do something like that
or it will backfire.
Nov 16, 2010 02:23:51 PM, 9y4w@gmx.net wrote:
Folks,
thank you all for your numerous contributions, and allow me to give a brief
summary as well as some more personal comments.
- Some comments i got dealt with the mismatch between "official" (publicised)
emergency frequencies as opposed to the frequencies actually used for emergency
traffic.
Quote 9Y4NED: " the centre of activity frequencies was an initiative from GAREC
and Region 1 to facilitate International disaster coordination and are not for
local disaster operations, the present frequencies 3.815 7.162 and local TTARS
7.159 has been used in the Caribbean for emergency communications in the region
for over 50 years and are well documented on emergency communications listings."
My comment:
Certain frequencies publicised as emergency frequencies have proved useless in
certain areas of a whole ITU region for different reasons, some of them being
permanent interferences from broadcast or unlicensed transmissions.
Furthermore, in times of disaster ANY frequency whatsoever where traffic
is possible in good quality should be used.
Initial traffic has, naturally, to start on a known "net" frequency, but
further point to point traffic should be moved outside crowded frequency ranges.
- It was suggested to use WARC bands.
Given the radio propagations on 24, 18 and 10 MHz, those bands are not suitable
for short range communication.
- It was also suggested to use the 5 MHz band.
This is a viable aspect which should be considered in the future.
Unfortunately, many of the radios in use and owned by radio amateurs in
our region may not be able to transmit on 5 MHz.
5 MHz is also not open for amateur radio use in all countries.
IARU should work towards opening 5 MHz world wide.
- Use of digital modes
It is undisputed that emergency traffic, especially when established as
longer lasting health and welfare traffic, should be performed in a digital
mode, on HF preferrably PACTOR.
The first responser's mode of choice, especially for initial communication on
net frequencies, will always be voice (SSB) though.
This makes it important to keep those net frequency free of contesting
activities in times of disaster.
- Alarm messages in the DX Cluster Network
Very good idea! Can be implemented immediately for no cost, as such an alert
can be initiated by any operator with internet access and it is supposedly
effectively alerting at least all multi-op and assisted op participants in a
contest.
I want to thank you all again for your contributions. The discussion produced
some good ideas to avoid future clashes between contest activities and
emergency operation, and, i am glad to say, showed wide spread interest and
openness of contesters for emergency communication.
Please spread the word and keep up the good work and intentions !
vy 73
Andreas "Andy" Kretzschmar 9Y4W, AF4DQ
--
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