Re: What Spectrum is Available from 30 MHz to 120 MHz?
- From: Feico de Boer <mynews.no_spam_please@xxxxxxxxxx>
- Date: Mon, 15 Aug 2005 14:15:09 -0000
"DAB sounds worse than FM" <dab.is@xxxxxxxxxxx> wrote in news:l%0Me.13141
$U36.1073@xxxxxxxxxxxxxxxxxxxx:
> Why not? What spectrum between 30 and 120 MHz do you think might become
> available for DRM?
My guess, and that is what it says, a guess is that only the FM band
(band II) will become available for DRM.
Everything between 30 and 50 MHz is mostly military fixed mobile, I don't
believe they will give that up despite modern cutting edge communications
technology. There is some other stuff there as well, but no large
contineous allocation.
Between 68 and 88 MHz there is also fixed/mobile. Since space is pretty
scarse around that area I don't think they will give that up either.
Currently in The Netherlands we have amongst others the Red Cross and
(military) police in this band. The police has moved to a new digital
system above 170 MHz so I don't know what the current status is. I think
that it should be possible to allocate 68 through 88 to broadcast but it
will be a hell of a job to get Europe aligned for this. And remember, you
will not 20 MHz of spectrum elsewhere in already crowded VHF-high and UHF
bands. Trunking and digital systems help to improve density, however
demand for frequencies is still high.
118 upto 120 is for aeronautical beacons, doesn't seem to be something
they want to change, I guess the 120 just looked more sensible that it
actually is (30 and 120 are mathematically linked).
Apart from current use, thing have to be regulated with administrations
in roughly 30 countries or so. Considering how hard it is already to
reallocate within the same allocation (TV->DAB; Analog TV->DVB) I can
hardly imagine that there will be new allocations within considerable
time.
This leaves my with 48-68 MHz aka TV band I. My best guess is that
countries having these frequency allocated will keep them for TV as they
allow for pretty cheap TV distribution (wide area coverage with
relatively few sites/power).
.
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