RSID: <<2020-07-09T23:31Z MFSK-32 @ 9265000+1500>>


Welcome to program 160 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:

  1:44 MFSK32: Program preview (now)
  2:50 Development of lightest electromagnetic shielding*
  8:31 MFSK64: Proposed shortwave station prompts an objection
11:46 This week's images*
28:07 MFSK32: Closing announcements

* with image(s)


Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

Twitter: @SWRadiogram



From New Atlas:

Aerogel fashioned into world's lightest electromagnetic shielding

Nick Lavars
2 July 2020

Containing the electromagnetic radiation generated by electronic
components is a key consideration for designers of electronic
devices, but today's metal-based shielding materials have their
downsides. Scientists at the Swiss Federal Laboratories for
Materials Science and Technology (EMPA) have developed an new
aerogel-based material that blocks a wide range of frequencies,
forming what they describe as by far the lightest electromagnetic
shielding material in the world.

Blocking the electromagnetic radiation in electronic devices can
be critical to maintaining their performance, because if these
fields aren't isolated from their surroundings they can affect
signal transmission or the function of nearby electronics.
Engineers often turn to thin sheet metals for this task, but
these add extra weight to the device and don't always fit neatly
with the design.

The EMPA team has been investigating alternative materials with
the hope of producing lighter, more malleable solutions, which
led them to cellulose fibers sourced from wood. These were
whittled down to nanoscale size and combined with silver
nanowires to form a light, porous aerogel that offers "excellent
shielding against electromagnetic radiation," with a density of
only 1.7 milligrams per cubic centimeter.

While the composition of the cellulose fibers and silver
nanowires produce a shielding effect, the porous nature of the
material also plays a role. When the electromagnetic fields
encounter the pores, they are bounced around within the void to
generate a secondary electromagnetic field, which actually
cancels out the original.

The combined effect is a material that blocks virtually all
radiation in the 8 to 12 GHz range, according to the team. The
desired level of absorption, meanwhile, can be adjusted by
tweaking the porosity, number of silver nanowires and thickness
of the material.

The team was able to able to make further weight reductions by
swapping out the silver nanowires for plates of titanium carbide,
which act like "bricks" while the cellulose fibers act as the
"mortar." This combined titanium carbide cellulose aerogel is "by
far the lightest electromagnetic shielding material in the
world," according to the team.

Two papers detailing the research were published in ACS Nano and
Advanced Science, respectively.

Source: EMPA

https://newatlas.com/materials/aerogel-lightest-electromagnetic-shield-world/

 

Image: The aerogel-based electromagnetic shield produced by EMPA
researchers ...

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Shortwave Radiogram now changes to MFSK64 ...
 

RSID: <<2020-07-09T23:39Z MFSK-64 @ 9265000+1500>>


This is Shortwave Radiogram in MFSK64

Please send your reception report to radiogram@verizon.net

From Radio World:

Proposed Shortwave Station in Illinois Prompts an Objection

Paul Mclane ·
8 July 2020

There's a plan in the works to build a new international
shortwave radio station in Illinois, one that would use the
Digital Radio Mondiale modulation system. But now several
prominent members of the U.S. shortwave community are asking the
Federal Communications Commission to take a closer look first.

Parable Broadcasting Co. in April asked the FCC to allow it to
build the station in Batavia, Ill., west of Chicago, using the
call sign WPBC. It wants to offer "broadcasting and data
services."

Specifically, Parable wrote that the station would "serve the
areas of Europe that may be authorized by the commission. The
planned broadcast content includes religious and educational
programming, as well as data content provided by third parties."
It added that it wants to "take advantage of the recent push by
the National Association of Shortwave Broadcasters to develop and
provide content for the growing DRM market."

Now three individuals, collectively called the High-Frequency
Parties, filed an informal objection. It's that wording about
data content that concerns them.

Bennett Z. Kobb, Kim Andrew Elliott and Christopher D. Rumbaugh
said international broadcast stations in the U.S. are intended
"to be received directly by the general public in foreign
countries."

Now they told the FCC that it is impossible to tell from the
Parable application whether all of the data services and data
provided by third parties will qualify.

Elliott is a former VOA employee who produces the program
"Shortwave Radiogram" and is active on Twitter. Rumbaugh
publishes the DRMNA.info website. Kobb has held various roles in
radio and telecommunications including launching a telecom
newsletter and writing books about spectrum allocations. He
currently is a government contractor. The three have filed joint
comments to the FCC before.

They wrote to the commission: "Various elements of the
application and its geographical location suggest that the
station will be engaged in the provision of point-to-point data
services for hire, a common carrier or private carrier of
messages not 'intended for direct reception by the general
public' and not 'to be received directly by the general public in
foreign countries.'"

Nothing in the rules allows non-broadcast service, including
ancillary or auxiliary services, they continued. "The applicant
proposes to use the Digital Radio Mondiale (DRM) standard. All
data messages from this station must be in a form readily decoded
by ordinary DRM receivers and rendered as publicly accessible
content without encryption or obscuration of their purpose or
meaning. While Section §73.758 authorizes 'datacasting' to
stations using DRM, it does not allow any form of datacasting
that is not also broadcasting."

They said they're definitely not against international data
broadcasts or to DRM. ("Our members pioneered such services at
the Voice of America and have operated DRM promotional websites
recognized by the DRM Consortium for more than a decade.") But
they said someone wishing to conduct commercial HF point-to-point
messaging for third parties should do so in a service dedicated
to that function; if none exists they should petition the FCC for
one.

While the FCC has authorized international data stations
experimentally, those were "never conceived to engage in revenue
operations indefinitely as an alternative to regular spectrum
allocations and transparent, public license assignment
procedures."

In a separate email to Radio World, Kobb noted recent news
coverage of shortwave applications for private data communication
services such as instant stock trading; examples are here and
here. Kobb emphasized that the objectors have no reason to think
Parable is associated with those particular projects.

http://www.radioworld.com/news-and-business/headlines/proposed-shortwave-station-in-illinois-prompts-an-objection

This is Shortwave Radiogram in MFSK64

Please send your reception report to radiogram@verizon.net

This week's images ...




A field of lavender in Puimoisson, France. From
https://bit.ly/38DC6U0 ...

Sending Pic:201x107C;






A man steers his stand-up paddleboard at sunset on the Velikaya
River in Pskov, near St. Petersburg, Russia. From
https://bit.ly/321JIyu ...

Sending Pic:204x129C;






A cuckoo wasp settles on a finger in Jena, Germany. "The
beautiful coloration changes with the angle of light incidence."
From https://bit.ly/2VWrj27 ...

Sending Pic:204x132C;







The flowering fields of Castelluccio, Italy, 3 July. From
https://bit.ly/2OcSHV2 ...

Sending Pic:204x183C;








A vessel off Aberdeen, Scotland. From https://bbc.in/3fcl95C ...

Sending Pic:179x205C;


 

Sunset at Ayr beach, Scotland. From https://bbc.in/3fcl95C ...

Sending Pic:192x189C;







A Cairo street deserted during a COVID-19 curfew, March 2020.
From https://nyti.ms/2W2Sgkz ...

Sending Pic:204x156C;

Lightning streaks across the sky above the White House in this
view south from Black Lives Matter Plaza, 7 July. From
https://bit.ly/3eedHFB ...

Sending Pic:206x131C;

Shortwave Radiogram returns to MFSK32 ...


 

RSID: <<2020-07-09T23:58Z MFSK-32 @ 9265000+1500>>


This is Shortwave Radiogram in MFSK32 ...


Shortwave Radiogram is transmitted by:

WRMI, Radio Miami International, wrmi.net

and

WINB Shortwave, winb.com


Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

Twitter: @SWRadiogram or twitter.com/swradiogram

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

RSID: <<2020-07-08T21:50Z MFSK-64 @ 7780000+1500>>

This Is A Music Show #072
8 July 2020

2100-2200UTC Wednesday on 7780 kHz
0200-0300UTC Thursday on 5850 kHz

via WRMI, Okeechobee USA

Rebroadcast on Unique Radio, Australia
1000-1100UTC Friday on 5045 or 3210 kHz USB
Check https://www.uniqueradio.biz/ for schedule!


***ALSO***

TIAExpressMS w/ Radio Northern Europe International
via Channel 292 in Germany, on 6070 kHz.

Broadcast various dates/times. Check the schedule here:

https://www.channel292.de/schedule-6070-khz/
https://rnei.org/

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

PLAYLIST

Gianni Morandi - Go-Kart Twist

-----

The Vogues - Brighter Days
The Fleetwoods - You Mean Everything To Me
Palais Royals - L.D. Cha Cha

-----

Stories - Changes Have Begun
Lucha Reyes - Como Una Rosa Roja    ♫♥
Michel Pagliaro - Pagliaro

-----

Rupert And The Rolling Coins - Are You Ready
Kings Road - One Monkey Don't Stop The Show
Living Brass - Baby I Love You

-----

Roland Burrel - Johnny Dollar (Version)
Reflection - Hot Summer Night (Edit)
Exotic Guitars - The Enchanted Sea

-----

Les Crane - A Different Drummer

-----

THIS DATA w/ Blue Ribbon Strings - Asleep In The Deep (-20%)

------

The Sweet Inspirations - Where Did It Go

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

Links of note:

None this week!

-----

Please send reception reports/comments:

thisisamusicshow@gmail.com

Follow TIAMS on Twitter:

www.twitter.com/ThisIsAMusicSho/

------


Thanks for listening!

--YOUR HOST--



EOM



RSID: <<2020-07-08T21:52Z MFSK-64 @ 7780000+1500>>

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