http://www.rhci-online.net/radiogram/radiogram.htm
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RSID: <<2024-09-19T23:31Z
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Welcome to program 371 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)
2:49 MFSK32: Earth to have new mini-moon for two months
6:17 MFSK64: More RFI from second-gen Starlink satellites
10:45 MFSK64: This week's images
27:48 MFSK32: Closing announcements
Please send reception reports to
radiogram@verizon.net
And visit http://swradiogram.net
We're on X/Twitter now: @SWRadiogram
From Phys.org:
Earth to have new mini-moon for two months
by Bob Yirka
September 13, 2024
A pair of asteroid dynamics researchers from Universidad
Complutense de Madrid Ciudad Universitaria have found that a
small asteroid will make one orbit around the Earth starting this
month before departing back into other parts of the solar system.
In their paper published in the journal Research Notes of the AAS
[American Astronomical Society], Carlos de la Fuente Marcos and
Raúl de la Fuente Marcos describe how the Earth tends to capture
asteroids on a regular basis and outline their calculations
showing the path of 2024 PT5 as it comes close to Earth.
Prior research has shown that many asteroids fall into partial or
full elliptical paths around the Earth before eventually being
flung away. Back in 2006, for example, a small asteroid circled
the Earth for approximately a year—and another one did so for
several years before leaving in 2020.
In this new effort, the researchers were looking at a small
asteroid that was discovered last month as part of the Asteroid
Terrestrial-Impact Last Alert System. Prior research had shown
that the asteroid was not on a collision course with Earth, and
the researchers suspected it might instead become bound by the
planet's gravity for a while.
The researchers noted that the asteroid is small, only 10 meters
across. By noting its current size, speed and path, the pair were
able to calculate its path over the next few months. They found
that it was going to come close enough to the Earth to become
bound by its gravity, if only for a couple of months.
Their work shows that it will circle the Earth one time, taking
53 days, starting at the end of this month and then leaving near
the middle of November.
In noting its path, the researchers were also able to estimate
its origins. They found that it likely came from the Arjuna
asteroid belt, which is made up of many asteroids with orbits
around the sun similar to Earth's. They also note that it is not
likely that asteroid 2024 PT5 is a piece of space junk because it
has a path that is similar to another object that has a natural
origin.
https://phys.org/news/2024-09-earth-mini-moon-months.html
Shortwave Radiogram now changes to MFSK64 ...
RSID: <<2024-09-19T23:36Z
MFSK-64 @
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This is Shortwave Radiogram in MFSK64
Please send your reception report to radiogram@verizon.net
From Phys.org:
Second-gen Starlink satellites leak 30 times more radio
interference, threatening astronomical observations
by Astronomy & Astrophysics
September 18, 2024
Observations with the LOFAR (Low Frequency Array) radio telescope
last year showed that first generation Starlink satellites emit
unintended radio waves that can hinder astronomical observations.
New observations with the LOFAR radio telescope, the biggest
radio telescope on Earth observing at low frequencies, have shown
that the second generation V2-mini Starlink satellites emit up to
32 times brighter unintended radio waves than satellites from the
previous generation, potentially blinding radio telescopes and
crippling vital research of the universe.
The study is published in the journal Astronomy & Astrophysics.
In recent years, the number of satellites launched into low earth
orbit (LEO) has skyrocketed, driven primarily by the rapid
commercialization of space and advancements in satellite
technology. Since 2019, companies like SpaceX and OneWeb have
launched hundreds to thousands of satellites, particularly for
communication purposes.
Plans show that the number of satellites launched into orbit
could surpass 100,000 by the end of the decade. The escalation in
radio wave emissions from satellites in LEO raises serious
concerns for the future of astronomical research.
This study was conducted using the LOFAR radio telescope, which
involved two extensive one-hour observation sessions on July 19,
2024, covering radio frequencies above and below the FM broadcast
band used by radio stations that you receive with your household
radio.
During these observations, the team detected unintended
electromagnetic radiation (UEMR) from almost all the Starlink
satellites observed, including both first-generation and
second-generation satellites.
"With LOFAR we have started a program to monitor unintended
emission from satellites belonging to different constellations,
and our observations show that the second-generation Starlink
satellites emit stronger emission and do so over a larger range
of radio frequencies, compared to the first-generation
satellites," says Cees Bassa from ASTRON (the Netherlands
Institute for Radio Astronomy), lead author of the study.
The analysis revealed that these newer satellites emit up to 32
times brighter unintended radio waves compared to the first
generation, with levels potentially exceeding internationally
regulated thresholds for interference set for intentional
emissions and even more relaxed terrestrial electromagnetic
compatibility standards.
"Compared to the faintest astrophysical sources that we observe
with LOFAR, UEMR from Starlink satellites is 10 million times
brighter. This difference is similar to the faintest stars
visible to the naked eye and the brightness of the full moon.
Since SpaceX is launching about 40 second-generation Starlink
satellites every week, this problem is becoming increasingly
worse," adds Cees Bassa."
This research highlights the necessity for stricter regulations
surrounding satellite unintended radiation to preserve the
sanctity of radio astronomical observations, which are vital for
understanding the universe and our place within it. The study
serves as a clarion call for action to safeguard the future of
astronomy in the face of advancing satellite technology.
"Humanity is clearly approaching an inflection point where we
need to take action to preserve our sky as a window to explore
the universe from Earth. Satellite companies are not interested
in producing this unintended radiation, so minimizing it should
also be a priority in their sustainable space policies," says
Federico Di Vruno from the SKA Observatory. "Starlink is not the
only big player in LEO, but they have a chance to set the
standard here."
The researchers emphasize that while the second-generation
satellites have been designed to enhance connectivity and provide
communication services, the unintended radio emissions are a
growing threat to the integrity of astronomical observations. As
the consequences of such interference become increasingly
evident, collaboration between satellite companies, regulatory
agencies, and the astronomical community is essential to devise
effective mitigation strategies.
In the Netherlands, one of the most densely populated countries
in Europe, ASTRON operates LOFAR, the most sensitive
low-frequency telescope in the world. This is only possible as a
result of the regulatory support of the Netherlands local,
provincial and national agencies. Municipalities consult ASTRON
before developments and support the institute advising others.
Prof. Jessica Dempsey, general and scientific director of ASTRON,
said, "Since LOFAR began, more than a decade ago—when we were
told we would soon struggle to observe because of radio
interference—the regulation support and a productive
collaboration with industry, totaling over 1000 individual
mitigations—have been done in collaborations with dozens of
groups, companies, infrastructures, agencies and individuals
across the country."
"And this relationship is not just one-sided. These clever
techniques to find faint signals in the universe have returned
technology advancements to industry and society—from GPS to WiFi.
We don't just co-exist, we thrive together. We have the solutions
for this symbiosis in space as well—we just need the regulators
to support us, and the industry to meet us half-way. Without
mitigations, very soon the only constellations we will see will
be human-made."
https://phys.org/news/2024-09-gen-starlink-satellites-leak-radio.html
This is Shortwave Radiogram in MFSK64
Please send your reception report to radiogram@verizon.net
This week's images ...
Tree with aurora background in the Glens of Antrim, Northern
Ireland.
https://tinyurl.com/2cefrjaj ...
Sending Pic:169x192C;
A North American river otter hunting crayfish in the Umpqua
River, Oregon.
https://tinyurl.com/2cfat2lr ...
Sending Pic:199x133C;
"Calendulas in sun and shadow."
https://tinyurl.com/22fks9wq ...
Sending Pic:198x134C;
Ladybird (ladybug) on acorn in Oxford, England.
https://tinyurl.com/2dmskhyf ...
Sending Pic:163x199C;
Early season snow in Obertauern in the Austrian Alps.
https://tinyurl.com/29h8pbvf ...
Sending Pic:243x300;
Moonrise with a partial lunar eclipse at Anza-Borrego Desert
State Park, California.
https://tinyurl.com/2cac4ds5 ...
Sending Pic:202x145C;
Chadron State Park, Nebraska.
https://tinyurl.com/23sl2tp8 ...
Sending Pic:143x198C;
Honey Crisp apples hybridized by the University of Minnesota.
https://tinyurl.com/2yrbm73d ...
Sending Pic:257x84C;
Dianthus. https://tinyurl.com/232tpekn ...
Sending Pic:199x155C;
Our painting of the week "Paint Cans" (1988) (detail) by Wayne
Thiebaud (American, 1920-2021).
https://tinyurl.com/29yjtehr ...
Sending Pic:230x134C;
Shortwave Radiogram returns to MFSK32 ...
RSID: <<2024-09-19T23:58Z
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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.
SWRG#371 closing song: https://www.shazam.com/song/200032749/youre-only-lonely JD Souther - You're Only Lonely
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http://www.rhci-online.net/radiogram/radiogram.htm
QTH: |
D-06193 Petersberg (Germany/Germania) |
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Ant.: |
Dipol for 40m-Band & Boomerang Antenna 11m-Band |
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RX for RF: |
FRG-100B + IF-mixer & ICOM IC-R75 + IF-mixer |
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Software IF: |
con STUDIO1 - Software italiano per SDR on Windows 11 [S-AM-USB/LSB] + HDSDR 2.81 beta6 - for scheduled IF-recording |
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Software AF: |
Fldigi-4.1.26 + flmsg-4.0.20 images-fldigifiles on homedrive.lnk |
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OS: |
Mirosoft Windows 11 Home |
German W7 32bit + 64bit |
PC: |
ASUS S501MD (since 2023) [i7-12700 12th Gen. 12 x 2100 MHz] |
MSI-CR70-2MP345W7 (since 2014) [i5 -P3560 ( 2 x 2600 MHz) ] |
http://wiki.radioreference.com/index.php/Decoding_the_SW_Radiogram_Broadcasts
https://www.qsl.net/ve7vv/Files/Digital%20Modes.pdf
RSID: <<2024-09-
20T11:30Z MFSK-64 @ 15770000+1500>>
Alannah Currie of the Thompson Twins was born September 20, 1957.
Sending Pic:240x207;
https://www.misspokeno.com/about/
Please report your decode to
themightykbc@gmail.com.
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RSID:
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https://yo5lka.net/temp/JARS6.mp3 |
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RSID: <<2024-09- 16T03:54Z MFSK-64 @ 5950000+1500>>
03.31z Moondai
- Among Us (Edm Remix)
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"CULT OF BABY RAVE"
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Here is a timeline of "data transmission via
BC
shortwave":
2013-03-16 - 2017-06-17 VoA Radiogram 000-220 USA
(Continuation under private management as SWRG)
2013-08-31 - until now KBC Radiogram
NL (without count, earliest note in my chronicle)
2016-03-23 - 2017-01-14 DIGI DX
01- 44 UK (Among other things also *.mid transferred)
2016-06-17 - 2019-01-01 IBC
DIGITAL
001-134 I (my own count)
2017-06-25 - until now SWRG
001-371 USA (and further ongoing)
2017-11-?? - 2018-12-23 BSR Radiogram 01- 44
USA (Broad Spectrum Radio)
2018-07-25 - 2019-04-06 SSR Radiogram 01- 33
NL (Slow Scan Radio)
2019-02-21 - 2023-08-03 TIAMS
001-222 CAN (This Is A Music Show)
2020-02-15 - until now RNEI
01- 50 UK
(and further ongoing)
2020-03-07 - 2023-08-06 TIAEMS 03/2020-07/2023 CAN (This
Is An Express Music Show)
2021-11-28 - until now Pop Shop Radio
CAN (first find of a playlist in a spectrogram scan)
2023-04-16 - until now
Radio Carpathia
ROM (first find of a playlist in edition #8)
Projects with digital playlists or content:
https://app.box.com/s/kbdxb4c5lwpju0kpoi27aiwc35br2g2a
HFZone WRMI-B23 Human Readable SKedGrid ++
HFZone WRMI-A24 Human Readable SKedGrid ++