[amsat-bb] Re: Phase 4 versus Eagle
kl7uw at acsalaska.net
Mon Dec 17 23:31:34 PST 2007
Fuel is not the only thing that will take out a site:
1- Wind Storm = no tower
2- Flood = circuits shorted, shelter swept away
3- Snow/Ice = collapses the equipment shelter, breaks antennas
4- Earthquake = takes out the interconnecting lines, tower, shelter, everything
5- Fire = bring marshmallows & frankfurts
Satellite-base infrastructure is largely insulated from these issues - IF:
there is self-powered, portable equipment, randomly distributed, with
...sounds like Ham Radio?
At 04:30 PM 12/17/2007, Nate Duehr wrote:
> > Forget the EMCOMM support, that does not make sense anymore. Read on...
> > WIMAX will be available from sprint soon. THAT will be a reliable
> > technology for ecom. With one access point, they will cover a wide
> > area for both data and voice. NOW, imagine multiple access point
> > ( and I mean 2 or 3 max) and regardless of what the ecom situation
> > is, help will get through.
>This service will be coming from U.S. carriers who wouldn't even put
>battery/generator backup on most of their wireless POP's until told to
>do so by the FCC after Katrina:
>Even with the new ruling, the FCC only recommends that such sites
>operate for 8 hours on emergency power.
>In other words, they don't expect the cellular companies to REFUEL those
>generators in any timely fashion.
>I worked for a large co-location company a few years ago, and we had a
>diesel contract that was VERY expensive.
>I talked to the truck driver once, and he told me that the order of his
>stops in bad weather/disaster situations would have been:
>Denver Health Medical Center - the alive ones at the hospital.
>Denver Police Headquarters and the Jail facility - the troublemakers,
>keep them inside.
>Denver Morgue - if it's warm out, you don't want the dead ones thawing
>and you probably have outdoor triage and refrigeration going on if
>things aren't quite as bad as Katrina.
>Denver Library - Security. Historical items.
>Our data center.
>Another route for another truck included the telco central office
>(Denver Main), and the "telco hotel" next door, as it's only customers
>that truck would serve. As long as the outage lasted, those truck
>wouldn't leave their "circular" routes which were planned to arrive just
>as generators were running out of fuel in a continuous loop. Any delay
>and we (being at the bottom) would either fall off the list, or they'd
>make arrangements to skip the library.
>That was his route with the diesel truck. He would run around in
>circles and do it all again, if the problem lasted for multiple days.
>Cell sites? Nope. WiMax sites? No way.
>Reality bites: Cell carriers don't pay to be on priority diesel
>contracts. Diesel deliveries to cell sites are on "best effort"
>contracts. They fall below everyone else with priority contracts.
>Good luck with your WiMax as an EmComm tool. Let us know how well it
>serves you when the power goes out and the diesel trucks can't get to
>all those new generators at all the WiMax and cell sites
>Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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Ed - KL7UW
BP40IQ 50-MHz - 10-GHz www.kl7uw.com
144-EME: FT-847, mgf-1801, 4x-xpol-20, 185w
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