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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> > > > > > >
> > > > > > > --
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> >
>
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