[BC] Interesting IBUZ article & WTW
Jonathan E. Hardis
jhardis
Sat Mar 24 13:52:41 CDT 2007
>I am not sure whether the LED traffic lights generatie noise because they
>are LED, or because they are switched with triacs instead of relays. I
>would think that the former would be more reliable. Anyway, yes, I would
>support your proposal, and even have some high-power AM stations on the
>long-wave band. Fewer people navigate by the NDB's there, preferring to use
>GPS or even VORTAC, and those old longwave beacons are being closed down all
>the time.
Actually, FYI, you have it backwards. GPS signals are highly
vulnerable to interference, sometimes with severe consequences.
Since we're becoming more and more dependent on GPS, the longwave
system, LORAN at 100 kHz, is gaining new credibility to act as a
backup. See:
http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2007_register&docid=fr08ja07-82.pdf
and the web references therein.
- Jonathan
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