> >
> > This is a case where satellite makes far more sense.
>
> Because so many of those evacuees have access to satellite
> radios...also, who would run the terrestrial repeaters?
> Should each station have to maintain a nationwide network of
> terrestrial repeaters? If everyone is forced to share
> repeaters, who pays to maintain them?
I suggest in another post "free" channels on satellite. The terrestrial repeaters are only needed to fill shadows, and in an emergency, having the transimitter up in the sky has very big advantages.
This is a future possibility, as are airborn AM stations and such. Land based stations are very fragile in emergencies, and we have the technology to guarantee disaster information in other ways. But we are not doing it.
>
> David, what could be so wrong with keeping the class A
> channels clear? It has many benefits in a catastrophic even
> like this. Even if there are no benefits, it isn't hurting
> anything, is it? In that long thread over a year ago, you
> kept contradicting yourself.
Most cities do not have such stations, and the wide coverage is really only useful at night. We need a system capable of doing 24 hour communication.
>
> First you argued that the clear channels should not be
> protected because under non-emergency situations, only a few
> people listen to skywave, with the benefit presumably being
> that not protecting them could free up channels for new
> stations to use to serve local areas. Okay, I highly
> disagree, but I see your point.
The benefit of not protecting the night signals on the clears was in the context of the iBOC debate. No more stations are added, although perhaps some of the daytimers could be given fulltime rights.
>
> But then, when I argued that a new broadcast band should be
> opened up because broadcast frequencies are in such high
> demand, you insisted that the market cannot handle new
> stations because having new stations would reduce the value
> of existing ones, hurting retired people on fixed incomes
> who have invested their money in radio. How can you argue
> both for and against adding new stations to the market at
> the same time? Either there is a shortage, or there is not.
> Either the market can handle more stations than it has now,
> or it cannot.
Adding stations in markets that have no good AM signals should be a priority, giving preference to the removal of existing stations to better channels. For example, DC has no AM that covers the entire market day and night.
>
> The only benefit of adding stations in an existing broadcast
> band is that they can be picked up on existing receivers.
> However, you have also argued in favor of AM IBOC because it
> would supposedly enable niche music formats to exist on AM,
> but IB(A)C requires people to buy new receivers anyway.
> Well if you're going to have to buy a new receiver anyway,
> why not just add capabilities to pick up a new broadcast
> band to new receivers, like FM in the 1960s, and not destroy
> mediumwave in the process?
Already half of all stations do not make money. If you want deteriorated service, add more. HD is an added benefit, not added stations... for the moment.
>
> I just don't buy the argument that there is no spectrum for
> this. The entire AM band would fit in the space of just 8
> FM channels. The entire FM band would fit in the space of
> just over 2 TV channels. XM has as much spectrum as about 2
> TV stations, and using digital compression they've fit all
> their channels into only 1/3 of that space (they have 2
> nonoverlapping satellite frequencies to avoid interference
> where signals from 2 satellites overlap, plus dedicated
> frequencies for terrestrial repeaters). We have a TV
> conversion going on that will free up more than that amount
> of spectrum in the VHF band, and our military hogging more
> spectrum than all broadcast services combined.
But the plans for the VHF channels are already in motion. There is no available spectrum, from a political and economic point of view. The beauty, if there is one, of HD, is that it uses existing channels.
> There is
> plenty of spectrum that can be reallocated for this. In the
> meantime, let the displaced citizens of New Orleans benefit
> from WWL's skywave service to get updates about what's going
> on around their flooded homes.
>
And be thankful they could stay on the air (although the were off the air during the most intense part of the storm... for just the "fragility" reasons I have named) because in many cases you would have all stations off the air.