Shortwave Radiogram, 27-30 August 2020: First digital modes to parachute from a solar-powered airplane


This weekend, the unusual twist in Shortwave Radiogram will be a brief news item in the Thor 100 mode. Thor 100 is fast (352 wpm) and wide (1800 Hz). I seem to recall we tried Thor 100 previously on Shortwave Radiogram or VOA Radiogram. I don’t think Thor 100 is as successful as our MFSK modes in typical HF conditions, but it’s worth a try.

Videos of last weekend’s Shortwave Radiogram (program 166) are provided by Scott in Ontario (Friday 1300 UTC), Magdiel in Mexico (Saturday 0230 UTC), 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 MFSK32, Thor 100,  and MFSK64, with ten MFSK images (1 x MFSK32 and 9 x MFSK64) .

Here is the lineup for Shortwave Radiogram, program 167, 27-30 August 2020, in modes as noted:

1:46  MFSK32: Program preview
2:54  Swiss parachutist first to jump from solar powered plane*
6:59  Thor 100: Improving ‘anti-solar’ energy production
8:14  MFSK64: Laser space communications closer to reality*
13:33  This week’s images*
28:28  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
MFSK64 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 MFSK text and image 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 1200 UTC on 3583 kHz USB (with
out-of-state check-ins now starting at 1130 UTC). 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.


Zach in Alabama received crisp and clear images August 20 at 2330 UTC … 

… and images softened by shortwave August 23 at 0800 UTC (5850 kHz) …


Fuente: Shortwave Radiogram, 27-30 August 2020: First digital modes to parachute from a solar-powered airplane


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