Shortwave Radiogram, 26-29 March 2020

Shortwave Radiogram

In this time of transition from winter to summer (or vice versa in the Southern Hemisphere), reception of Shortwave Radiograms good at some times on some frequencies, and marginal at other times and on other frequencies.  Because many of us are quarantined, this might be a good time to experiment with some modes we don’t usually transmit, to see if they can produce a successful text decode in difficult conditions. And, therefore, our first news item will be in the Olivia 16-1000 mode (40 word per minute). The question for us to ponder is whether this
slow mode provides better performance than our usual MFSK32 (120 wpm) in challenging reception environments.

Sunday of this weekend brings a change to Summer Time in most of Europe. Note that local times for Shortwave Radiogram may change accordingly. Also on Sunday will be start of the A20 shortwave broadcast frequency
season. I am not aware of any changes to Shortwave Radiogram frequencies, except for the Friday 1500-1530 UTC DRM broadcast from WINB Pennsylvania, which will change to 15750 kHz starting 3 April.

Videos of last weekend’s Shortwave Radiogram (program 144) are provided by Scott in Ontario (Friday 1300 UTC), Scott Haley in Oklahoma (Saturday 0230 UTC), 2010DFS in Japan and Lola sdr in Spain (both Sunday 0800 UTC on 7730 kHz). The audio archive is maintained by Mark in the UK. Analysis is prepared by Roger in Germany.

This weekend’s show is in MFSK32, Olivia 16-1000 and MFSK64, with nine MFSK images.

Here is the lineup for Shortwave Radiogram, program 145, 26-29 March 2020, in modes as noted:

1:48  MFSK32: Program preview
2:59  Olivia 16-1000: Hams to help develop low cost ventilator
9:42  MFSK64: Ford helps produce respiratory equipment*
14:29  This week’s images*
28:00  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

| 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 | 13690 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” is the newest addition to
digital modes via analog shortwave. 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.


Germán TG5ALY in Guatemala received these nearly perfect images, 21 March 2020, 1330-1400 UTC, 15770 kHz from WRMI Florida …


Fuente: Shortwave Radiogram, 26-29 March 2020: Digital modes that kill time while sheltering in place


Etiquetas:, , , , , ,

Deja una respuesta

Introduce tus datos o haz clic en un icono para iniciar sesión:

Logo de

Estás comentando usando tu cuenta de Salir /  Cambiar )

Foto de Facebook

Estás comentando usando tu cuenta de Facebook. Salir /  Cambiar )

Conectando a %s

Este sitio usa Akismet para reducir el spam. Aprende cómo se procesan los datos de tus comentarios.

A %d blogueros les gusta esto: