http://www.rhci-online.net/radiogram/radiogram.htm

https://github.com/GyanD/codexffmpeg/releases/tag/2023-03-05-git-912ac82a3c

set MyFiles=*.flac *.fla *.wav *.aif *.mp4 *.mp3 *.mp2 *.aac *.ogg *.m4a
for %%a in (%MyFiles%) do ffmpeg -i "%%a" -y -lavfi showspectrumpic=s=1920x1080:color=fiery:gain=.7:fscale=lin:orientation=0:saturation=1:mode=combined:legend=enabled:start=0:stop=8000 "%%~na.jpg"

RSID: <<2025-05-01T23:31Z MFSK-32 @ 9265000+1500>>

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THIS
PROGRAM
400(!)
OF
SHORTWAVE
RADIOGRAM
WILL BE
BROADCAST
1-7 MAY 2025
AND
REPEATED
8-14 MAY 2025


Welcome to program 400 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)
  3:13 MFSK32: BBC Burmese on DTH channel formerly used by VOA
  7:11 MFSK64: NIST launches new cesium fountain clock
10:30 MFSK64: This week's images
28:07 MFSK32: Closing announcements


Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

We're on Bluesky now: SWRadiogram.bsky.social

And X/Twitter: @SWRadiogram
 

RSID: <<2025-05-01T23:33Z MFSK-32 @ 9265000+1500>>

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BBC press release:

BBC News Burmese launches on direct-to-home video channel in the
aftermath of Myanmar earthquake

24 April 2025

To ensure audiences can access crucial information in the
aftermath of the Myanmar earthquake, the BBC World Service has
added a direct-to-home satellite video channel to the platforms
delivering BBC News Burmese content.

In the coming four months, the Thaicom 6 satellite, which covers
Myanmar, Thailand, and the wider region, will deliver BBC News
Burmese TV and audio programming. The channel will also provide
access, via a QR code, to the service's website, bbc.com/burmese.
...

In the aftermath of the disaster that struck Myanmar on 28 March
2025, millions in the country, as well as Burmese-speakers in
Thailand, came to the service's platforms for accurate updates
and analysis. BBC News Burmese journalists were deployed to the
earthquake epicentre and were reporting from Mandalay, Yangon,
and Bangkok, as well as from London. BBC News Burmese extended
its daily live radio bulletin from 15min to 30min to include
additional reporting and lifeline information. Audiences can also
watch the Monday to Friday 15-minute TV bulletin which goes on
air at 20.45 local time.

BBC News Burmese channel on Thaicom 6 satellite will run all this
programming, with evening repeats of radio and TV bulletins from
May 2025. The channel will also visualise the QR code for the
website bbc.com/burmese, so the viewers can access the latest
news and information online.

Over the next few months, the direct-to-home satellite video
channel – formerly used by VOA – will add to BBC News Burmese
availability via the service's website as well as its YouTube
channel and its Facebook page which has a following of 25m
people. BBC News Burmese also connects with audiences via
Instagram, Telegram and X. Digital free-to-air TV channel,
Mizzima TV, rebroadcasts BBC News Burmese TV programmes.

BBC News Burmese is part of the BBC World Service.

Full text:
https://www.bbc.com/mediacentre/2025/bbc-burmese-launches-on-direct-to-home-video-channel

ဘီဘီစီရေဒီယို၊ ရုပ်သံအစီအစဥ်တွေကို ဂြိုဟ်တုကဖမ်းယူနိုင်ပြီ


Shortwave Radiogram now changes to MFSK64 ...



RSID: <<2025-05-01T23:37Z MFSK-64 @ 9265000+1500>>

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This is Shortwave Radiogram in MFSK64

Please send your reception report to radiogram@verizon.net

 

From Phys.org:

New atomic fountain clock joins elite group that keeps the world
on time

by Rich Press
National Institute of Standards and Technology
April 28, 2025

Clocks on Earth are ticking a bit more regularly thanks to
NIST-F4, a new atomic clock at the National Institute of
Standards and Technology (NIST) campus in Boulder, Colorado.

This month, NIST researchers published an article in Metrologia
establishing NIST-F4 as one of the world's most accurate
timekeepers. NIST has also submitted the clock for acceptance as
a primary frequency standard by the International Bureau of
Weights and Measures (BIPM), the body that oversees the world's
time.

NIST-F4 measures an unchanging frequency in the heart of cesium
atoms, the internationally agreed-upon basis for defining the
second since 1967. The clock is based on a "fountain" design that
represents the gold standard of accuracy in timekeeping. NIST-F4
ticks at such a steady rate that if it had started running 100
million years ago, when dinosaurs roamed, it would be off by less
than a second today.

By joining a small group of similarly elite timepieces run by
just 10 countries around the world, NIST-F4 makes the foundation
of global time more stable and secure. At the same time, it is
helping to steer the clocks NIST uses to keep official U.S. time.
Distributed via radio and the internet, official U.S. time is
critical for telecommunications and transportation systems,
financial trading platforms, data center operations and more.

NIST-F4 has improved time signals that are "used literally
billions of times each day for everything from setting clocks and
watches to ensuring the accurate time stamping of hundreds of
billions of dollars of electronic financial transactions," said
Liz Donley, chief of the Time and Frequency Division at NIST.

A special kind of clock

Cesium fountain clocks such as NIST-F4 are a type of atomic
clock—a complex, high-precision device that extracts timing
pulses from atoms. These clocks play a critical role in our
globally connected society: They serve as "primary frequency
standards" that work together to calibrate Coordinated Universal
Time, or UTC (an agreed-upon system for keeping time using data
from atomic clocks around the world, known as a time scale).

National measurement labs such as NIST produce and distribute
versions of UTC using their own time scales; NIST's version, for
example, is known as UTC(NIST). Those national time scales are
then used to synchronize the clocks and networks we rely on in
our daily lives.

In fountain clocks, a cloud of thousands of cesium atoms is first
cooled to near absolute zero using lasers. Then, a pair of laser
beams toss the atoms gently upward, after which they fall under
their own weight.

During their journey, the atoms pass twice through a small
chamber full of microwave radiation. The first time, as the atoms
are on their way up, the microwaves put the atoms into a quantum
state that cycles in time at a special frequency known as the
cesium resonant frequency—an unchanging constant set by the laws
of nature.

About one second later, as the atoms fall back down, a second
interaction between the microwaves and the atoms reveals how
close the clock's microwave frequency is to the atoms' natural
resonant frequency. This measurement is used to tune the
microwave frequency toward the atomic resonance frequency.

A detector then counts 9,192,631,770 wave cycles of the
fine-tuned microwaves. The time it takes to count those cycles
defines the official international second.

(That may change as early as 2030, when nations plan to consider
redefining the second in terms of one or more different atomic
elements used in so-called optical clocks that can measure time
even more precisely than fountain clocks can. Even after that,
cesium fountain clocks will still play an important, though
diminished, role in timekeeping.)

Full text:
https://phys.org/news/2025-04-atomic-fountain-clock-elite-group.html
 

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This is Shortwave Radiogram in MFSK64

Please send your reception report to radiogram@verizon.net
 

This week's images ...



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A polar bear swims while hunting along the coast
of Hudson Bay. tinyurl.com/2aag6696 ...

Sending Pic:199x134C;




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A hare pauses at Frankfurt airport. tinyurl.com/26bon4cf ...

Sending Pic:146x202C;




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Sunrise over the Pap of Glencoe, Scotland, April 20.
tinyurl.com/24rk4hnx ...

Sending Pic:202x147C;




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Light coming through the stained glass window in Linlithgow
Palace in Scotland. tinyurl.com/24rk4hnx ...

Sending Pic:159x192C;




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Sailing into a sunset at West Beach in North Berwick, Scotland.
tinyurl.com/24rk4hnx ...

Sending Pic:213x130C;




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A flower at the Tyler Arboretum near Philadelphia.
tinyurl.com/2a3hdoee

Sending Pic:198x136C;




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Blue-Eyed Grass (Sisyrinchium bellum), a tiny but brilliant wild
flower, in Mt. Diablo State Park, northern California.
tinyurl.com/27ttnlku ...

Sending Pic:199x134C;




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An Orange Crowned Warbler (looking more green) in Mount Diablo
State Park, California. tinyurl.com/26tdsn8k ...

Sending Pic:149x202C;




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Marsh marigolds at the Mortom Arboretum near Chicago.
tinyurl.com/2a7ze7lz ...

Sending Pic:196x159C;
 

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Our painting of the week is flowers by David Hockney (British, b.
1937). tinyurl.com/2bp3yku5 ...

Sending Pic:157x208C;





Shortwave Radiogram returns to MFSK32 ...


 

This is Shortwave Radiogram in MFSK32 ...


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

X/Twitter (for now): @SWRadiogram

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

Sending Pic:180x120;

https://www.cuemath.com/numbers/400-in-roman-numerals/

RSID: <<2025-05-02T11:30Z MFSK-64 @ 15770000+1500>>
 

Mary Hopkin was born on May 3, 1950.

Sending Pic:179x240;

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