Shortwave Radiogram, 8-10 January 2021

I hope 2021 is off to a good start good, safe and healthy start for you and yours.  Mine is off to a good start because I remembered not to type “2020” – at least so far.

Last week’s program offered the usual mix of good reception, bad reception, and surprising reception. You can keep track of the fun in real time or after the fact by following the @SWRadiogram Twitter account. Or if you prefer not to sign up for Twitter, point your browser to and scroll down.

One example of interesting reception last week is this image from the Saturday 1330 UTC show by way of a very echoey (multipath) signal to an SDR in Maryland. In fact, the signal was so multipath that the image header would not decode, so I had to “graft” a good header from the studio recording. The results is an artistic rendition full of ghosts … 


Videos of last weekend’s Shortwave Radiogram (program 185) are provided by Scott in Ontario (Sunday 0800 UTC on 5850 kHz, because Scott did not have good reception on his usual 15770 kHz) and by Frigid RF in Virginia (Sunday 2330 UTC).

The audio archive is maintained by Mark in the UK. Analysis is prepared by Roger in Germany.

This weekend  show is in our usual  MFSK32 and MFSK64, with eleven MFSK64 images. There is also a surprise mode – with RSID to help you identify it – under the closing music.

Here is the lineup for Shortwave Radiogram, program 186,  8-10 January 2021, in modes as noted:

1:38  MFSK32: Program preview
2:44  New design for rechargeable zinc-air batteries
6:32  MFSK64: Methane-based fuel for return trips from Mars
9:06  This week’s images
27:05  MFSK32: Closing announcements
27:57  Surprise mode under music

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       |
| Friday   | 0030-0100 UTC | 9265 kHz         | WINB Pennsylvania |
| Friday   | 1300-1330 UTC | 15770 kHz        | WRMI Florida      |
| Friday   | 1500-1530 UTC | 13655 kHz DRM    | WINB Pennsylvania |
| Saturday | 0330-0400 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 will be a rerun this weekend, without the usual MFSK. Normally it transmits to North America Sundays at 0000-0200 UTC (Saturday 7-9 pm EST) on 5960 kHz, via Germany. 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. . @ThisIsAMusicSho

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 1300 UTC on 3584 kHz USB, and the Pennsylvania NBEMS net Sunday at 1230 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, Thursdays 0000 UTC (Wednesdays 7 pm EST) on 3536 kHz USB.

Philippe F1GMA in France received these images 2 January 2021 on 15770 kHz from WRMI Florida …



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 )

Imagen de Twitter

Estás comentando usando tu cuenta de Twitter. 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: