Actually, the r75 Coverage: 30-60000 kHz
----- Original Message -----
From: "Louis Kim Kline" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, August 04, 2006 8:48 PM
Subject: Re: New VLF Radio Technology (fwd)
> Yes, I'm sure. It goes a bit lower than my other receiver, the Icom R71A
> which goes down to 100 kHz. That was one reason why I never went to the
> Icom R75--it only went down to 300 kHz, and it wasn't low enough to suit
> me. Occasionally, we get enough of a band opening in the winter time to
> hear the stuff between 150 and 250 kHz coming through from region 1. It's
> usually a bitter cold night in the dead of winter when it happens, and
> some
> years it doesn't happen at all.
>
> I used to have a much easier time with these frequencies before I moved
> into the city. Oh well, you can't have everything, I guess.
>
> 73, de Lou K2LKK
>
>
>
> At 05:02 PM 8/3/2006 -0600, you 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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>
> Louis Kim Kline
> A.R.S. K2LKK
> Home e-mail: [log in to unmask]
> Work e-mail: [log in to unmask]
> Work Telephone: (585) 697-5753
>
>
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