Colin I have always been told that the CW down there is air port ids and the 
reason that they are on those frequencies is that range is short enough not 
to interfere with the airport in close cities.
----- Original Message ----- 
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 04, 2006 9:00 AM
Subject: Re: New VLF Radio Technology (fwd)


yes, i think its probably 5WPM or so.
not sure of the purpose though....perhaps its a navigational beacon of some
sort.

anyone know exactly why they use CW identifiers on LW?
73
Colin, V A6BKX
----- Original Message ----- 
From: "Jeff Kenyon" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 04, 2006 2:43 AM
Subject: Re: New VLF Radio Technology (fwd)


> They use really slow CW too I may add, but I've never paid much attention
> to distance or anything like that or identifications, even when I was
> studying CW.
>
>
>
>
>
> On Thu, 3 Aug 2006, Colin McDonald wrote:
>
> > those beacons you hear are airport identification codes.
> > If you work out the cw characters, you can then look it up on a beacon
list
> > and find out where it is coming from.
> > They are usually 3 letter calls with a Z Y or X somewhere in the chain.
> > 73
> > Colin, V A6BKX
> > ----- Original Message -----
> > From: "Jeff Kenyon" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Thursday, August 03, 2006 5:42 PM
> > Subject: Re: New VLF Radio Technology (fwd)
> >
> >
> > > Well, I have some equipment that tunes to 100-150 KHz like I said and
it
> > > seems like the lower I go the worst it gets.  I think that power lines
are
> > > on 60 Hz or something like that?  I konw that from 155-281 there is a
> > > broadcast band in Europe, and other parts of the world, but all I've
heard
> > > is noise and beacons.
> > >
> > >
> > >
> > >
> > >
> > > On Thu, 3 Aug 2006, Colin McDonald wrote:
> > >
> > > > is it?
> > > > I know on broadcast and just below its pretty noisy, but it probably
> > gets
> > > > quieter as you get away from line noise frequencies and what not.
> > > > that is probably why they are going digital though, since
digitalized
> > > > signals can compensate for noise or can cut through the noise better
> > then
> > > > analogue voice.
> > > > 73
> > > > Colin, V A6BKX
> > > > ----- Original Message -----
> > > > From: "Jeff Kenyon" <[log in to unmask]>
> > > > To: <[log in to unmask]>
> > > > Sent: Thursday, August 03, 2006 5:08 PM
> > > > Subject: Re: New VLF Radio Technology (fwd)
> > > >
> > > >
> > > > > We also have to consider a brand new digital standard too.  I
wonder
> > what
> > > > > that would be considering that interference and electrical noise
is so
> > > > > common down there.
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > On Thu, 3 Aug 2006, Colin McDonald wrote:
> > > > >
> > > > > > are you sure it goes to 30K, and not 300K?
> > > > > > 300K is a bit more common for your average HF wide band
receiver.
> > > > > > 100 is the next most common.
> > > > > >
> > > > > > at any rate, its about time they start using ground penetrating
RF
> > > > signals
> > > > > > to communicate.
> > > > > > I think there has been some research by NASA into those
> > possibilities,
> > > > but
> > > > > > nothing camercial yet.
> > > > > > I wonder what freq range  they are looking at using.
> > > > > >
> > > > > > 73
> > > > > > Colin, V A6BKX
> > > > > > ----- Original Message -----
> > > > > > From: "Jeff Kenyon" <[log in to unmask]>
> > > > > > To: <[log in to unmask]>
> > > > > > Sent: Thursday, August 03, 2006 4:25 PM
> > > > > > Subject: New VLF Radio Technology (fwd)
> > > > > >
> > > > > >
> > > > > > > Hi everyone, I just saw this and it came in with the last post
> > about
> > > > FM
> > > > > > > DX.  I don't konw about the rest of you, but the lowest my
> > equipment
> > > > will
> > > > > > > go in frequencies is 100 KHz on the F6A.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > ---------- Forwarded message ----------
> > > > > > > Date: Thu, 3 Aug 2006 15:17:32 -0700
> > > > > > > From: Punworg <[log in to unmask]>
> > > > > > > To: [log in to unmask]
> > > > > > > Subject: New VLF Radio Technology
> > > > > > >
> > > > > > > Quick!  Somebody design some new scanners!
> > > > > > > ---------------------------------------
> > > > > > > New 'underground radio' technology improves emergency
> > > > > > > capabilities
> > > > > > >
> > > > > > > New Mexico Business Weekly - 12:43 PM MDT Wednesday
> > > > > > >
> > > > > > > Los Alamos National Laboratory says Vital Alert
> > > > > > > Technologies Inc. has signed two exclusive license
> > > > > > > agreements with the lab for Underground Radio=99, a
> > > > > > > technology that will provide two-way voice and text
> > > > > > > capability known as Through-The-Earth-Communication=99
> > > > > > > for first responders, rescue and security teams,
> > > > > > > underground miners and the public in critical
> > > > > > > emergency situations.
> > > > > > >
> > > > > > > Underground Radio, originally developed by LANL for
> > > > > > > the Department of Energy, is being commercialized by
> > > > > > > Vital Alert Technologies for use by emergency crews in
> > > > > > > urban centers and by the mining industry.
> > > > > > >
> > > > > > > Vital Alert is a wholly-owned subsidiary of Vital
> > > > > > > Alert Communication Inc. Vital Alert develops pre- and
> > > > > > > post-emergency, safety and rescue technology for the
> > > > > > > urban and mining communications sectors.
> > > > > > >
> > > > > > > "The new technology is a breakthrough in digital and
> > > > > > > wireless communications," says Joe Miller, president
> > > > > > > and CEO of Vital Alert, in a news release. "As a pre-
> > > > > > > and post-emergency warning, evacuation and rescue
> > > > > > > communication system, it solves radio frequency
> > > > > > > failure problems and eliminates systems' downtime
> > > > > > > complications in difficult environments such as
> > > > > > > subways, tunnels, skyscrapers and mines. The new
> > > > > > > technology will also greatly enhance the ability of
> > > > > > > mining companies to protect their workers."
> > > > > > >
> > > > > > > Underground Radio uses very low frequency (VLF)
> > > > > > > electromagnetic radiation and digital audio
> > > > > > > compression technologies to carry voice and text data.
> > > > > > > The VLF signals also can transmit tracking and
> > > > > > > location data for radio users in case they are unable
> > > > > > > to respond.
> > > > > > >
> > > > > > > "This is a technical solution to the problem of voice
> > > > > > > communication in underground areas," said David
> > > > > > > Reagor, the principal investigator of the Los Alamos
> > > > > > > team that originally developed the technology. "It's
> > > > > > > also inexpensive to build."
> > > > > > >
> > > > > > > Underground Radio can be used to alert individuals of
> > > > > > > underground conditions during blasts, fires or
> > > > > > > collapses, or to locate trapped miners. The technology
> > > > > > > was designed to provide convenient, portable
> > > > > > > underground communication and a data link to robotic
> > > > > > > machines.
> > > > > > >
> > > > > > > Peter Vieth
> > > > > > > KB4FVJ
> > > > > > > Roanoke, VA
> > > > > > >
> > > > > > > __________________________________________________
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