Shortwave Radiogram, 14-17 May 2020: Digital modes that are ultra-thin and flexible

Shortwave Radiogram

Occasionally a Shortwave Radiogram is especially difficult to produce due to errors and technical difficulties. This weekend’s show (program 152) is one of them. To make everything fit into 29 minutes, 30 seconds, I had to eliminate the final paragraphs of the remdesivir story (use the link for the complete text), delete several images, and reduce the size of other images. In a few cases, the program would become longer as I did this. Was there a change in the laws of arithmetic?

Anyway, now I can relax and listen (well, the sound of MFSK is not very relaxing), decode, and also see your results. When you report via email or Twitter, please note approximately how much of the MFSK text decodes successfully. If we get at least 90% decode of the MFSK32 text, we can declare success, even if the images are somewhat fuzzy.

Videos of last weekend’s Shortwave Radiogram (program 151) are provided by Scott in Ontario (Friday 1300 UTC), 2010DFS in Japan (more amazing reception Sunday 0800 UTC, 7730 kHz, via his Beverage antenna), and Ralf in Germany (Sunday 2330 UTC). The audio archive is maintained by Mark in the UK. Analysis is prepared by Roger in Germany.

This weekend’s show is in the usual MFSK32 and MFSK64, with nine MFSK images (1 x MFSK32 and 8 x MFSK64) .

Here is the lineup for Shortwave Radiogram, program 152, 14-17 May 2020, in MFSK modes as noted:

1:39  MFSK32: Program preview
2:44  New solar cells work well indoors*
8:18  MFSK54: COVID-19 drug remdesivir is here. Now what?
13:38  This week’s images*
28:10  MFSK32: Closing announcements

* with image(s)

Please send reception reports to

And visit

Twitter: @SWRadiogram or (visit during the weekend to see listeners’ results)

Facebook group:

Shortwave Radiogram Gateway Wiki

Shortwave Radiogram Transmission Schedule

| UTC Day  | UTC Time      | Frequency        | Transmitter       |
| Thursday | 2330-2400 UTC | 9265 kHz         | WINB Pennsylvania |
| Friday   | 1300-1330 UTC | 15770 kHz        | WRMI Florida      |
| Friday   | 1500-1530 UTC | 15750 kHz DRM    | WINB Pennsylvania |
| Saturday | 0230-0300 UTC | 9265 kHz         | WINB Pennsylvania |
| Saturday | 1330-1400 UTC | 15770 kHz        | WRMI Florida      |
| Sunday   | 0800-0830 UTC | 5850 and 7730 kHz| WRMI Florida      |
| Sunday   | 2330-2400 UTC | 7780 kHz         | WRMI Florida      |

The Mighty KBC transmits to North America Sundays at
0000-0200 UTC (Saturday 8-10 EDT) on 9925 kHz, via Germany. A minute of
MFSK is at about 0130 UTC.  Reports to Eric: . See also and

“This is a Music Show” Most of the show is a music
show, but the host transmits some text and images in various modes near
the end of the broadcast. It’s transmitted on WRMI, Thursdays at
0200-0300 UTC on 5850 kHz (Wednesday evening in the Americas) and a new
time also on WRMI, Wednesdays at 2100-2200 UTC on 7780 kHz (aimed
towards Europe) . Also look for a waterfall ID at the beginning of the
show. .

New York and Pennsylvania NBEMS nets. Most weekends, as
KD9XB, I check in to the New York NBEMS (Narrow Band Emergency
Messaging Software) net Saturday at 1200 UTC on 3584 kHz USB, and the
Pennsylvania NBEMS net Sunday at 1130 UTC on 3583 kHz USB. Check-ins are
usually in Thor 22, and messages are in MFSK32. Messages generally use
the Flmsg
add-on to Fldigi. If you are a radio amateur in eastern North America,
feel free to check in. Outside the region, use an SDR in the eastern USA
to tune in and decode. You do not need Flmsg to check in, and most of
the messages can be read without Flmsg. If you can decode the net, send
me an email to , or tweet to @SWRadiogram , and I
will let them know you are tuned in. USEast NBEMS Net: Please also note the USEast NBEMS Net, Wednesdays 2300 UTC (7 pm EDT) on 3536 kHz USB.



Via the WINB DRM transmission, we don’t often see a full set of
image decodes, but Fred in Virginia decoded these using an SDR in
Switzerland, 8 May 2020, 1500-1530 UTC, 15750 kHz …


Fuente: Shortwave Radiogram, 14-17 May 2020: Digital modes that are ultra-thin and flexible


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