Shortwave Radiogram, 22-25 August 2019

Shortwave Radiogram

Our “hidden message” last week in the PSK125R mode was not as successful as the BPSK63F two weeks previously. Because the PSK125R is a wider mode, I had to put it as low as possible to prevent it from being audible. This put the lower part of the PSK125R right up against the carrier, and too low for many receivers to process. This week our hidden message will be in QPSK63, a narrower mode, centered on 65 Hz.  It begins 21 seconds after the closing MFSK32 ends (29:06 into the half hour broadcast), mixed with the closing music. There is an RSID but, as usual, it probably won’t work. To my ear, at least, the QPSK63 is inaudible.

Videos of last weekend’s Shortwave Radiogram (program 113) are provided by Scott in Ontario (Friday 1300 UTC), Tengu in Japan (Sunday 0800 UTC, 5850 kHz, excerpt), and Ralf in Germany (Sunday 2330 UTC). The audio archive is maintained by Mark in the UK. Analysis is prepared by Roger in Germany (with particular attention to the PSK125R).

This weekend’s show is in the usual MFSK32 and MFSK64, with ten MFSK images, And the silent QPSK63 at the end.

Here is the lineup for Shortwave Radiogram, program 114, 22-25 August 2019, in modes as noted:

1:37  MFSK32: Program preview
2:40  Indian spacecraft enters lunar orbit*
7:33  MFSK64: Data rate increase for the ISS
10:53  This week’s images*
27:56  MFSK32: Closing announcements
29:06  QPSK63 “hidden message” at 65 Hz

* 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 Transmission Schedule           |
| UTC Day  | UTC Time      | Frequency     | Transmitter site    |
| Thursday | 2330-2400 UTC | 9265 kHz      | WINB Pennsylvania   |
| Friday   | 1300-1330 UTC | 15770 kHz     | WRMI Florida        |
| Friday   | 1500-1530 UTC | 15120 kHz DRM*| WINB Pennsylvania   |
| Saturday | 0230-0300 UTC | 9265 kHz      | WINB Pennsylvania   |
| Sunday   | 0800-0830 UTC | 5850 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 pm 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 Florida, Thursday 0100-0200 UTC on
5850 kHz, and Thursday 0130-0200 UTC on 9395 kHz (these are Wednesday
evening in the Americas). Also look for a waterfall ID at the beginning
of the show. . or

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 (PA NBEMS is experimenting with
Thor 50×1 for messages). 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 at 2300 UTC (7 pm EDT)
on 3536 kHz USB. I will try to check in to this net more frequently.



Marco in Italy decoded these messages and the PSK125R hidden message 15
August 2019, 2330-2400 UTC, 9265 kHz from WINB Pennsylvania…


Fuente: Shortwave Radiogram, 22-25 August 2019: Digital modes in orbit around, before landing on, the moon


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