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RSID: <<2023-04-06T23:31Z MFSK-32 @ 9265000+1500>>

Welcome to program 299 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:

  1:35 MFSK32: Program preview (now)
  2:43 MFSK32: Asteroid Didymos spinning fast, flinging rubble
  6:33 MFSK64: Asian swamp eels spread in the Everglades*
12:10 MFSK64: This week's images*
28:30 MFSK32: Closing announcements

* with image(s)


Please send reception reports to

And visit

We're on Twitter now: @SWRadiogram


The asteroid Didymos may be spinning so fast it is flinging off

by Bob Yirka
March 30, 2023

A team of planetary scientists at Universidad de Alicante, in
Spain, has found that the asteroid Didymos may be spinning so
fast that it is flinging off rubble from near its equator. In
their paper published in the journal Icarus, the group describes
their study of the asteroid and explain why its behavior may have
an impact on the way that other space objects are studied.

The asteroid Didymos was in the news a lot last year - it is
believed to be the parent of Dimorphos, the asteroid's moonlet
that was the object of NASA's Double Asteroid Redirection
Test - where NASA slammed an object into a space rock to see if
doing so could deflect its trajectory. The idea was to find out
if doing so could one day save planet Earth from being impacted
by a much bigger planetary body. The success of the project
suggested the answer is yes, which brought a collective sigh of
relief to NASA and other space agencies around the world.

Prior theory has suggested that Dimorphos came to exist due to
debris being flung into space from the much larger asteroid
Didymos. As bits of material were spun off, they gathered in the
vicinity and eventually coalesced to form Dimorphos. Such a
theory hints at the possibility that material is still being
flung from Didymos. Researchers have been studying its
characteristics using data compiled from missions that were
tasked with selecting a target for the DART project.

To date, the research team has been able to measure the
asteroid's size and its mass and has determined at least some of
its composition. They also know that its rotation rate is so fast
that it helps to explain the asteroid's top-like shape. The group
has fed all that is known about the asteroid into a computer
model which showed that it is spinning fast enough to be ejecting
material from its mid-section.

If material is being ejected, the researchers believe there are
four scenarios that could occur; the material could simply fall
back to the asteroid, it could escape into space, get stuck
orbiting the asteroid or land on Dimorphos. They believe the
first option is the most likely. They will not know for sure,
they note, until the European Space Agency's Hera mission gets
underway, where a probe will be sent to study both Dimorphos and
Didymos and to send back pictures.

Shortwave Radiogram now changes to MFSK64 ...

RSID: <<2023-04-06T23:37Z MFSK-64 @ 9265000+1500>>

This is Shortwave Radiogram in MFSK64

Please send your reception report to




From the Miami Herald via

Asian swamp eels spread in the Everglades: 'Potentially the worst
species we've had yet'

by Alex Harris
March 430, 2023

For a crayfish in the Florida Everglades, its worst nightmare is
three feet long, dark brown and pure muscle, with a mouth like a
vacuum that sucks up nearly everything it can find—tiny fish,
small shellfish, turtle eggs and frogs.

It's called the Asian swamp eel. And while Floridians may be more
used to seeing it grilled and doused in a sweet sticky sauce in
sushi rolls, the slippery beasts have become an increasingly
problematic invasive species in the delicate Everglades

While these eels have been a presence in certain pockets of the
park for decades, a newly released paper published in the journal
Science of the Total Environment has—for the first time—put some
hard numbers on the voracious appetite of these creatures. And it
isn't pretty.

In Taylor Slough alone, researchers found that populations of two
native crayfish and the tiny flagfish dropped 99% since the eels
invaded. Marsh killifish dropped 91% and the eastern
mosquitofish, important for its pest-munching prowess, tumbled

"You can't say 100% because there were like two crayfish," said
Matthew Pintar, lead author of the paper and a researcher at
Florida International University at the time.

The decline of the small critters that make up the base of the
food web for most life in the Everglades, including wading birds,
is dramatic enough that Pintar suggests the eel should dethrone
the Burmese Python as the most formidable invasive species in the

"In Taylor Slough, they're the No. 1 species in terms of the
threat they pose to the ecosystem," he said. "It's potentially
the worst species we've had yet."

From kitchen table to backyard canal

These invasive eels first slithered their way into South Florida
in the late '90s, likely from folks dumping unwanted pets (or
food) into nearby water bodies, although some of those releases
can be chalked up to religious practices.

Their first official spotting was in a canal near Hard Rock
Stadium in 1997. They made their way into the Everglades by 2007,
just outside Taylor Slough, a shallow sheet of water that flows
into Florida Bay in the southern Everglades.

Populations have also sprung up in Tampa and Sarasota bays and
the Myakka and Peace rivers, as well as in other states including
Georgia, Louisiana and even New York.

And once the eels have arrived, they tend to spread. Scientists
first found the eels inside Taylor Slough in 2009, and by 2014
they were catching eels at every sampling site in the
95-square-mile watershed. Researchers have started finding them
farther west, including in Shark River Slough, as well as in the
water conservation areas to the north of Everglades National

"Since 2015 their distribution just exploded," Pintar said. "We
have no idea how many there are now."

While they're a native species of Asia, these swamp eels are
uniquely suited to survive in the feast and famine flood and
drought conditions in the Florida Everglades.

Unlike other fish or snakes, these eels have both gills for
breathing underwater and lungs for breathing on land. No other
predator in the Everglades can match that.

The invasive eel was particularly hard on creatures that rely on
the natural drought periods in the Glades for survival. Crayfish
and the marsh killifish both hatch and rear their young right at
the end of the dry season, in the few short weeks before normal
predators return to the area to hunt.

But now, when the crayfish burrow out of the mud or the killifish
get ready to lay their eggs, the drought-resistant swamp eel is
already there waiting to snap them up. They can burrow into the
drying mud and wait, sometimes as long as five months, for their
next meal.

"None of the large fish can do that, native or invasive species,
are able to survive like that," Pintar said. "They have all kinds
of weird evolutionary traits to help them survive."

How to kill them

Although predators like alligators and bigger birds, like herons,
have been seen snacking on the slippery fish, Pintar said they're
not making enough of a dent in the rapidly swelling population.

For now, he said, the invasive eels appear to be spreading
unabated throughout the Everglades. Efforts to round up invasive
species of all types (and there are many in the swamps) do catch
the occasional eel, but Pintar said efforts targeted specifically
at the eels dried up around 2012.

"Once they made it to the wetlands they stopped making any kind
of effort," he said.

Researchers analyzing the long-term health of the Glades keep
scooping up the eels in new sites, including Shark River Slough,
an important nesting site for wading birds. That worries Pintar,
who said there's a chance that if the eels are left unchecked,
they could scarf up enough small fish and shellfish that small
wading birds have trouble finding enough to eat.

"In ten years' time if they continue to spread and have the same
effects we might see more whole food web effects," Pintar said.

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This is Shortwave Radiogram in MFSK64

Please send your reception report to


This week's images ...




Freshly dyed eggs lie on a conveyor belt in Ursberg, Germany. ...

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A rare melanistic leopard, a two-year-old female, also known as a
black panther, in Laikipia, Kenya. ...

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Tilly the dog observes Edinburgh at night from Blackford Hill. ...

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A tulip in the Palisades section of Washington DC, April 4. ...

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Mount Tacoma Double Late Tulips at the Dallas Arboretum. ...

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An early-season Summer Tanager in Guadalupe River State Park,
Texas. ...

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A Black-and-white Warbler at Guadalupe River State Park, Texas. ...

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Prickly pear flowers at Lake Havasu State Park, Arizona. ...

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Our painting of the week is "Restaurant de la Machine at
Bougival" (1905) by Maurice de Vlaminck (1876–1958). ...

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Shortwave Radiogram returns to MFSK32 ...


RSID: <<2023-04-06T23:58Z MFSK-32 @ 9265000+1500>>


This is Shortwave Radiogram in MFSK32 ...


Shortwave Radiogram is transmitted by:

WRMI, Radio Miami International,


WINB Shortwave,

Please send reception reports to

And visit

Twitter: @SWRadiogram or

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





  SWRG#299  closing song:





 D-06193 Petersberg (Germany/Germania)


 Dipol for 40m-Band    &   Boomerang Antenna 11m-Band

 RX   for  RF:

 FRG-100B + IF-mixer  &    ICOM IC-R75 + IF-mixer

 Software IF:

 con STUDIO1  -  Software italiano per SDR on Windows 11      [S-AM-USB/LSB]   +      HDSDR 2.81 beta6   - for scheduled IF-recording

 Software AF:

 Fldigi-4.1.26        +   flmsg-4.0.20                            images-fldigifiles on homedrive.lnk


 Mirosoft Windows 11 Home

 German W7 32bit + 64bit


 ASUS S501MD (since 2023) [i7-12700 12th Gen. 12 x 2100 MHz]

 MSI-CR70-2MP345W7  (since 2014)   [i5 -P3560 ( 2 x 2600 MHz) ]




<<2023-04-09T11:27Z MFSK-64 @ 9670000+1500>>

  --- RNEI #40 ---
  () = Spotify Plays

  1, Caitlin Myers&Un3h - Stay with Me (RNEI Edit) 🇺🇸&🇸🇪 (1.1m)
  2, Vesala - Testamentti 🇫🇮 (641k)
  3, LA Priest - It's You 🇬🇧 (34.2k)
  4, Pikekyss - Alt eller ingenting 🇳🇴 (33.8k)
  5, Moyka - Rear View 🇳🇴 (64.2k)
  6, Najana - Nila's Joik *Sámi* (1152k)
  7, Neon Letters&Maiko - Tokimeki 🇪🇪&🇯🇵 (49.5k)
  8, Inspector Spacetime - Dansa&Bánsa (RNEI Edit) 🇮🇸 (232k)

  Ha det!

























RSID: <<2023-04-10T01:55Z MFSK-64 @ 5950000+1500>>

Pop Shop Radio - Radiogram
Show 2023-14
MFSK64 - Colour
200 x 200 px

Image: The_Lonnie_Donegan_Skiffle_Group-Rock_Island_Line
Sending Pic:200x200C;

The Lonnie Donnegan Skiffle Group-Rock Island Line
London 1650 (1956) USA
The first record and first hit from the King of Skiffle
Chart action:
UK: 8
Billboard Hot 100: 8

The Buckinghams-Hey Baby (They're Playing Our Song)
Suzi Quatro-Your Mama Wont Like Me
R And J Stone-We Do It
Top Notes-Twist And Shout
The Buffoons-Sister Theresa East River Orphanage
The Valentines-My Old Man's A Groovy Old Man
Cat Mother and the All Night News Boys-Good Old Rock n Roll
Deodato-Also Sprach Zarathurstra
Maureen McGovern-The Morning After
Gloria Gaynor-Substitute
Lonnie Donnegan Skiffle Group-Rock Island Line
Buffy Sainte Marie-I Wanna Hold Your Hand Forever
Carly Simon-The Girl You Think You See
The Haircuts-Love Me Do
The Haircuts-She Loves You
Ken Tobias-I Just Want To Make Music
James Last-Happy Heart
Love Society-Bang On Your Own Drum
reception reports to:
twitter: @popshopradio1

RSID: <<2023-04-10T01:58Z MFSK-128 @ 5950000+1500>>

Bonus: Lonnie Donnegan

Image: Lonnie_Donegan
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RSID: <<2023-04-09T22:30Z MFSK-64 @ 5950000+1500>>



Janis Ian was born Janis Eddy Fink, April 7, 1951.

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