Shortwave Radiogram, del 23 al 27 de Marzo: programa 297

Shortwave Radiogram
Shortwave Radiogram

This will be another weekend of changes: Most of Europe will move its clocks forward on March 26. That same day the A23 HF (shortwave) frequency season begins. Many shortwave broadcast stations will change frequencies to adjust for seasonal propagation. As far as I know, there are no changes for the WRMI and WINB frequencies used for Shortwave Radiogram. This weekend the only local time change would be for the Monday 0800-0830 transmission, which is usually difficult to hear in Europe.

If you are able to receive and decode the DRM transmission on Friday (it’s a challenge!), please note that its time has changed to 1400-1430 UTC – at least it did last weekend – on 15755 kHz from WRMI Florida. If you don’t hear it at 1400-1430 UTC, try 1500 UTC, in case WINB decides after all to keep  programs on this frequency pegged to UTC, like they did last year.

Here in the Washington DC area, early spring means that the famous cherry trees are in bloom. There are lots of photos of the cherry blossoms available, but surprisingly few that would work well on Shortwave Radiogram. A lack of good lighting is the main culprit. One cherry tree photo is included in this weekend’s show.

A video of last weekend’s Shortwave Radiogram (program 296) is provided by Scott in Ontario (Friday 1300 UTC).  The audio archive is maintained by Mark in the UK. Analysis is prepared by Roger in Germany.

Here is the lineup for Shortwave Radiogram, program 297, 23-27 March 2023, in MFSK modes as noted:

  1:35  MFSK32: Program preview
  2:41  MFSK32: Grow rice in Martian soil?
  6:07  MFSK64: Small-budget satellite is space junk remedy*
13:16  MFSK64: This week’s images*
28:39  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       |
| Friday   | 0030-0100 UTC | 9265 kHz         | WINB Pennsylvania |
| Friday   | 0530-0600 UTC | 7780 kHz         | WRMI Florida      |
| Friday   | 1300-1330 UTC | 15770 kHz        | WRMI Florida      |
| Friday   | 1500-1530 UTC | 15755 kHz DRM    | WINB Pennsylvania |
| Saturday | 0330-0400 UTC | 9265 kHz         | WINB Pennsylvania |
| Saturday | 2300-2330 UTC | 7570 kHz         | WRMI Florida      | 
| Monday   | 0800-0830 UTC | 5850 kHz         | WRMI Florida      |

The Mighty KBC transmits to Sundays at 2200-2400 UTC (5-7 pm EST) on 5950 kHz from WRMI Florida. A minute of MFSK64 is at about 2330 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-64 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). Also look for a waterfall ID at the beginning of the show.    @ThisIsAMusicSho

Pop Shop Radio from British Columbia, Canada, includes “a whole variety of pop music, such as records from the 1960s and 1970s that were played on Top-40 radio stations not only in North America but also on offshore radio and stations like Radio Luxembourg.” The programs now include some MFSK text and an image. Website: Twitter: @popshopradio1  Email:

Thanks for your reception reports!


Kim Andrew Elliott, KD9XB

Producer and Presenter

Shortwave Radiogram




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