Topband: Am I the only one in step?
don at g3bj.com
Fri Mar 4 03:25:00 EST 2016
The use of that spectrum by others has reduced very significantly. I cannot
say that there are no other users, but it's not like it used to be when the
current spectrum allocations were originally agreed.
That is the reason that IARU raised the matter as a potential agenda item
for WRC 19.
If you look at the detail of the allocations, some countries are observing
the power levels implicit in the ITU schedules, whilst others are not.
There may, therefore, be some scope for national agreements to improve the
Don, G3BJ / G5W
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Donald
Sent: 04 March 2016 00:39
To: topband at contesting.com
Subject: Re: Topband: Am I the only one in step?
> Mike - I agree the objective, but the reality is a little harder!
> The 160 allocations across Europe, for example, vary widely. 1800-1810
not generally part of the allocated spectrum. Various countries have various
parts of the band with varying power privileges (you'll have seen
IARU-R1-rev-7-Jan-2015.pdf/ I am sure )
IARU tried at WRC 2015 to get an agenda item for WRC 2019 on the global
harmonisation of the 160m band. We failed - there was simply not enough
support from national administrations, many of whom could not see the
priority. So although IARU can continue to seek harmonisation, the reality
is that this is not going to happen any time soon, sadly.
>Don, G3BJ / G5W (Presidnet IARU Region 1)
Maybe someone living in Europe can tell us what are the services that have
priority on 1800-1810 and 1840-2000 in Regions 1 and 3 that seem to be such
sacred cows that amateurs remain severely restricted? Are those frequencies
actually being used for anything that serves a useful purpose, or is this
merely a case of administrative inertia and intransigence? Ever since the
demise of LORAN 35 years ago, I have yet to hear any non-amateur traffic on
those frequencies, other than occasional low-power fishnet beacons. I should
think that if they were actually in widespread use in other parts of the
world for essential non-amateur communication, that occasionally some of
those signals would be audible here in N America, as is certainly the case
within the 3500-4000 kHz band.
Here in the US, 1705-1800 is reserved for Radiolocation, but that segment is
all but devoid of signals of any kind. The GPS system rendered Radiolocation
in this part of the spectrum obsolete years ago and the beacon transmitters
eventually all went dark. The FCC went so far recently as to re-allocate
1900-2000 to amateurs on a primary basis, deleting Radiolocation altogether,
which had previously shared that segment with amateurs and radiolocation the
primary user. Not to mention the LORAN radionavigation system that was
taken off the band in the early 1980s.
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