Monday, September 26, 2005

UNC Bld-201 NDT server

via UNC

TCP/Web100 Network Diagnostic Tool v5.2.1e
running 10s outbound test (client to server) . . . . . 375.97Kb/s
running 10s inbound test (server to client) . . . . . . 3.50Mb/s
running 10s outbound test (client to server) . . . . . 375.97Kb/s
running 10s inbound test (server to client) . . . . . . 3.74Mb/s


For the record, abridged results of two tests of our Comcast throughput on a Monday evening, thanks to the University of North Carolina.

Friday, September 16, 2005

Regenerative Receiver -- Before


I wanted to build N1BYT's Wheatstone Bridge Regenerative receiver into a tea tin and for the most part I was successful. But mounting the board on the underside of the lid and several bits of hardware on the tin's body caused wires to break when I needed to tweak and adjust the receiver. So I'm switching enclosures. These photos simply record the cute approach. Maybe someday it'll be back in here.

More info on regen receivers: AA3SJ | AA5TB | WD4NKA | N1TEV via VK2TIP

This receiver design was published in QST in August 2001.


Friday, September 09, 2005

Wetlands Protect Coastal Communities


From the Society of Wetland Scientists
The impact of the hurricane would have been reduced if Louisiana had not lost so many of its coastal wetlands. A map summarizing wetland loss in Louisiana from 1932-2000 is posted on the web site of the National Wetlands Research Center (NWRC) (http://www.nwrc.usgs.gov/). Note the particularly heavy loss south, southwest, and southeast of New Orleans.


The ocean is strong, but natural coastal systems are good at cushioning the impact of massive amounts of rushing water.

Marshes and dunes are not preferred for permanent human habitation, however, so we destroy them and build walls to prevent flooding. It works well, by and large, but Mother Nature can do wonders.

Arguing that New Orleans would have been spared if the Corps of Engineers got the money to bolster dikes misses the point: Living in flood zones is risky. Choosing to take that risk means accepting the consequences. Low-probability events are not no-probability events.

(Earthquakes, tsunamis, unprecedented cold snaps and dry spells, tornados, et cetera... You could say Living is risky.)

Friday, September 02, 2005

Hastert questions how to rebuild New Orleans

From CNN:
WASHINGTON (AP) -- It makes no sense to spend billions of dollars to rebuild a city that's seven feet under sea level, House Speaker Dennis Hastert said of federal assistance for hurricane-devastated New Orleans.


Excellent point, if ill-timed. But the backlash -- oh, my! How can anyone already be so certain about the efficacy of rebuilding in an automatic deep-flood zone? Go ahead, but let the investment dollars come from the locals, not the feds.

Let's hope I don't make a habit of agreeing with Hastert, though.