RSID: <<2020-02-07T00:31Z MFSK-32 @ 9265000+1500>>




Welcome to program 138 of Shortwave Radiogram.

I'm Kim Andrew Elliott in Arlington, Virginia USA.

Here is the lineup for today's program, in MFSK modes as noted:

  1:40 MFSK32: Program preview (now)
  2:51 Expedition planned to retrieve Titanic's radio gear*
  8:05 MFSK54: New technology may extend lithium battery life*
13:22 This week's images*
27:11 MFSK32: Closing announcements

* with image(s)


Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

Twitter: @SWRadiogram




I hope to see you at the Winter SWL Fest, 27-28-29 February,
Plymouth Meeting, Pennsylvania (suburban Philadelphia).
Information at swlfest.com.




From ARRL.org:

Undersea Expedition Planned to Retrieve Titanic's Radio Gear

4 February 2020

The company with sole rights to salvage artifacts from the RMS
Titanic has gone to court to gain permission to carry out a
"surgical removal and retrieval" of the Marconi radio equipment
on the ship, a Washington Post article reports. The Titanic sank
in 1912 on its maiden voyage after striking an iceberg in the
North Atlantic. As the radio room filled with water, radio
operator Jack Phillips transmitted, "Come at once. We have struck
a berg. It's a CQD, old man," and other frantic messages for
help, using the spark transmitter on board. CQD was ultimately
replaced with SOS — which Phillips also used — as the universal
distress call. The passenger liner RMS Carpathia responded and
rescued 705 of the passengers.

As might be expected, the deteriorating Marconi equipment is in
poor shape after more than a century under water. The undersea
retrieval would mark the first time an artifact was collected
from within the Titanic, which many believe should remain
undisturbed as the final resting place of some 1,500 victims of
the maritime disaster, including Phillips. The wreck sits on the
ocean floor some 2 1/2 miles beneath the surface, remaining
undiscovered until 1985.

A just-signed treaty between the UK and the US grants both
countries authority to allow or deny access to the wreck and to
remove items found outside the vessel. "This momentous agreement
with the United States to preserve the wreck means it will be
treated with the sensitivity and respect owed to the final
resting place of more than 1,500 lives," British Transport and
Maritime Minister Nusrat Ghani said in a statement.

The request to enter the rapidly disintegrating wreck was filed
in US District Court in Eastern Virginia by RMS Titanic, Inc. of
Atlanta, which said that it hopes to restore the Titanic radio
transmitter to operating condition, if it is allowed to go
forward.

The company plans to use a manned submarine to reach the wreck
and then deploy a remotely controlled sub that would perforate
the hull and retrieve the radio equipment.

http://www.arrl.org/news/undersea-expedition-planned-to-retrieve-titanic-s-radio-gear

See also:
https://www.washingtonpost.com/history/2020/01/21/titanic-treaty-salvage-expedition/


 

Image: RMS Titanic in better days (of which it had very few) ...

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Shortwave Radiogram now changes to MFSK64 ...


 

RSID: <<2020-02-07T00:38Z MFSK-64 @ 9265000+1500>>


This is Shortwave Radiogram in MFSK64

Please send your reception report to radiogram@verizon.net
 

MIT's solid-state battery breakthrough may see phones last for
days

Nick Lavars
4 February 2020

One of the many ways scientists hope to improve the performance
of today's lithium batteries is by swapping out some of the
liquid components for solid ones. Known as solid-state batteries,
these experimental devices could greatly extend the life of
electric vehicles and mobile devices by significantly upping the
energy density packed inside. Scientists at MIT are now reporting
an exciting advance toward this future, demonstrating a new type
of solid-state battery architecture that overcomes some
limitations of current designs.

In a regular lithium battery, a liquid electrolyte serves as the
medium through which the lithium ions travel back and forth
between the anode and cathode as the battery is charged and
discharged. One problem is that this liquid is highly volatile
and can sometimes result in battery fires, like those that
plagued Samsung's Galaxy Note 7 smartphone.

Replacing this liquid electrolyte for a solid material wouldn't
just make batteries safer and less prone to fires, it could also
open up new possibilities for other key components of the
battery. The anode in today's lithium batteries is made from a
mix of copper and graphite, but if it were made of pure lithium
instead, it could break the "energy-density bottleneck of current
Li-ion chemistry," according to a recent study published in
Trends in Chemistry.

So, the huge potential of a pure lithium anode makes it a high
priority among battery researchers, and a key stepping stone is
the introduction of a viable solid electrolyte to make it work.
But there are significant hurdles with that, too. As the battery
is recharged, atoms build up inside the lithium metal causing it
to expand, and decrease during use, causing the metal to
contract. This makes constant contact between the materials
nearly impossible and can result in the electrolyte fracturing.

This is the problem that MIT's new battery architecture could
overcome. It involves a combination of solid materials known as
mixed ionic-electronic conductors (MIEC) and electron and Li-ion
insulators (ELI). These were built into a three-dimensional
honeycomb-shaped architecture, with an array of nanoscale tubes
made from MIEC forming the crucial piece of the puzzle.

These tubes are infused with solid lithium metal to form the
battery's anode. And because there is extra space inside each of
these tubes, the lithium metal has spare room to expand and
shrink during charging and discharging. In this way, the material
walks a fine line between a solid and liquid material, moving
much like a liquid but maintaining a solid crystalline structure
throughout the process.

All of this takes place inside the honeycomb-structured anode,
with the ELI coating the walls of the tubes and acting as a
binder between them and the solid electrolyte. This means that as
the battery charged, the fluctuating dimensions of the lithium
metal are entirely contained inside the structure and its
external dimensions are unchanged.

The upshot of that is a battery anode that is chemically and
mechanical stable as it cycles through the charging and
discharging process, while the lithium doesn't ever lose
electrical contact with the solid electrolyte. The team sees this
as a significant advance on other experimental solid-state
batteries, which typically rely on some kind of liquid
electrolyte mixed in to make the thing work.

"But in our case, it's truly all solid," says Ju Li, a professor
of materials science and engineering at MIT. "There is no liquid
or gel in it of any kind."

The team has conducted experiments putting the solid-state
battery architecture to the test, and report that it was able to
endure 100 charging and discharging cycles without any signs of
fracture. Further down the track, the technology could make for
anodes that weigh around a quarter of current designs, but with
the same storage capacity. Combined with other cutting-edge
designs for the cathode, the team says it could lead to
smartphones of the same weight and size, that only need to be
charged once every three days.

The research was published in the journal Nature Energy.

Source: MIT

https://newatlas.com/materials/mits-solid-state-battery-breakthrough/


Image: Model of a Lithium atom ...

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This is Shortwave Radiogram in MFSK64

Please send your reception report to radiogram@verizon.net

 

This week's images ...



Berries along the Potomac River in Washington DC, with the
skyline of Arlington, Virginia, across the river. From
wapo.st/2S1wnAD ...

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Tourists walk in the freshly snow-covered forest in Willingen,
Germany. From bit.ly/2txx9ff ...

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The Foreign and Commonwealth Office buildings are illuminated on
Brexit day in London, January 31. From bit.ly/2vTXAg6 ...

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A Thai Royal Guard wears a mask while he stands inside the Royal
Palace in Bangkok. From reut.rs/2vcymZN ...

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A meteor streaks over the Chesapeake Bay Bridge near Annapolis,
Maryland. From bit.ly/3bf3zMM ...

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A pygmy chameleon is seen at Chester Zoo in the UK, 29 January.
From bit.ly/39cyPdn ...

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Crocuses appearing very early this year, in the unseasonably warm
weather of Washington DC, 3 February. From bit.ly/2UrxZW0 ...

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Our painting of the week is an iceberg off Newfoundland by
Frederic Edwin Church, from bit.ly/2OwM0xR ...

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Shortwave Radiogram returns to MFSK32 ...
 

RSID: <<2020-02-07T00:57Z MFSK-32 @ 9265000+1500>>


This is Shortwave Radiogram in MFSK32 ...


Thursday, 13 February, is UNESCO's World Radio Day. Information at
worldradioday.org.


Transmission of Shortwave Radiogram is provided by:

WRMI, Radio Miami International, http://wrmi.net

and

WINB Shortwave, http://winb.com


Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

Twitter: @SWRadiogram

I'm Kim Elliott. Please join us for the next Shortwave
Radiogram.
 

RSID: <<2020-02-06T02:50Z MFSK-64 @ 5850000+1500>>

This Is A Music Show #050
6 February 2020

0200-0300UTC Thursday on 5850 kHz
0200-0230UTC Thursday on 7780 kHz*
0230-0300UTC Thursday on 9395 kHz*

via WRMI, Okeechobee USA
*freebie backups kindly provided by WRMI to fill empty slots ;)

----------------------------------------

PLAYLIST
 

Links of note:

Oh No, The Modulator: Live house party show, 2002:
https://www.youtube.com/watch?v=3a0-7j0YFuE

-----

Please send reception reports/comments:

thisisamusicshow@gmail.com

Follow TIAMS on Twitter:

www.twitter.com/ThisIsAMusicSho/

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Thanks for listening!

--YOUR HOST--



EOM



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