[amsat-bb] Re: Eagle and emergency traffic (was Re: Galileointerference on L band)
afeller at ieee.org
Sun Sep 24 16:05:30 PDT 2006
At 05:25 PM 24-09-2006, George Henry wrote:
>Semantics aside, I pointed out that at least one of those NGOs (the American
>Red Cross) has poured tens, if not hundreds, of thousands of dollars into a
>commercial satellite internet solution, likely rendering our efforts to
>eventually meet that same want, obsolete.
I've operated the Red Cross system VSAT system. It's good, 2 or 4
Mbps service with a DHCP server or fixed IP address available as part
of the radio package. They use the service  to extend the data
network supporting the in-house IP telephone system and computer
system and  to operate land mobile base stations remotely. Works
very well, once it's going. (Let save third party traffic and
cyphers for another time.)
At the same time, the Red Cross system is anything but
nimble. Deployment from a limited stock of equipment can take days
for shipment (problematic into disaster areas) and hours to get into
service. With some pre-assembly, once on site, a good crew of two
well trained technicians can get one of the Red Cross VSAT stations
on the air in an hour or two. Finding the well trained technicians
is another problem.
In essence, the Red Cross' major issues are quantity, transportation,
Hams usually have big advantages in all three areas.
If all we can deliver is short lead time 250 kbps service for 18
hours a day, they'll be very happy, indeed.
W4ART Arlington, VA
Life is short. Be swift to love! Make haste to be kind!
- Henri Frederic Amiel, philosopher and writer (1821-1881)
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