Shortwave Radiogram, 5-7 April 2019: Digital modes with complete transparency

Shortwave Radiogram

Apologies for the missing transmission last weekend on 9400 kHz. I hope the Saturday’s 1400 UTC broadcast is heard this without mishap.

During the broadcasts that were heard, our experiment with simultaneous  English and Spanish text, using side-by-side MFSK32 streams, worked well. The dual audio caused mixing products that made the signal look somewhat messy on spectrum displays, but this did not seem to affect the decoding of the text. You can see an example of the decoded dual at the bottom of this post.

Videos of last weekend’s Shortwave Radiogram (program 93) are provided by Scott in Ontario (Friday 2030 UTC) and Ralf in Germany (Sunday 2330 UTC). MDK2 in Colorado produced a video of the dual MFSK32 transmission and Hoya Boya2015 in Japan the opening segment battling QRM (both Sunday 0800 UTC). And radio no koe in Japan provided a video of the dual MFSK32 transmission from the SoundCloud audio that I posted because of the absence of the Saturday 1400 UTC transmission.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 94, 5-7 April 2019, in MFSK modes as noted:

1:45  MFSK32: Program preview
2:58  Department of Defense information on WWV/WWVH
6:31  MFSK64: Petition re “Amateur digital mode transparency”
9:12  Comment: The US’ ‘five-year’ moon plan is dangerous*
14:03  This week’s images*
28:32  MFSK32: Closing announcements

* with images(s)

Please send reception reports to radiogram@verizon.net

And visit http://swradiogram.net

Twitter: @SWRadiogram or https://twitter.com/swradiogram (visit during the weekend to see listeners’ results)

Facebook group: https://www.facebook.com/groups/567099476753304

+----------------------------------------------------------------+
|            Shortwave Radiogram Transmission Schedule           |
+----------------------------------------------------------------+
| UTC Day  | UTC Time      | Frequency     | Transmitter site    |
+----------+---------------+---------------+---------------------+
| Friday   | 1500-1530 UTC | 13755 kHz DRM*| WINB Pennsylvania   |
+----------+---------------+---------------+---------------------+
| Friday   | 2030-2100 UTC | 7780 kHz      | WRMI Florida        |
+----------+---------------+---------------+---------------------+
| Saturday | 0230-0300 UTC | 9265 kHz      | WINB Pennsylvania   |
+----------+---------------+---------------+---------------------+
| Saturday | 1400-1430 UTC | 9400 kHz      | Space Line Bulgaria |
+----------+---------------+---------------+---------------------+
| Sunday   | 0800-0830 UTC | 5850 7730 kHz | WRMI Florida        |             |
+----------+---------------+---------------+---------------------+
| Sunday   | 2330-2400 UTC | 7780 kHz      | WRMI Florida        |
+----------+---------------+---------------+---------------------+

Slow Scan Radio transmits SSTV images and text modes
Saturdays at 1300-1330 UTC on 6070 kHz and 7440 kHz via Channel 292 in
Germany. And Saturday 1730-1800 UTC on 9265 from WINB Pennsylvania. The
website is http://www.slowscanradio.com. Reception reports to x@xdv.me.

The Mighty KBC transmits to Europe Saturdays at
1300-1400 UTC on 11600 kHz from Bulgaria, with the minute of MFSK at
about 1330 UTC (if you are outside of Europe, listen via
websdr.ewi.utwente.nl:8901/ ). And to North America Sundays at 0000-0200
UTC (Saturday 8-10 pm EDT) on 5960 kHz, via Germany. The minute of MFSK
is at about 0130 UTC.  Reports to Eric: themightykbc@gmail.com . See also http://www.kbcradio.eu/ and https://www.facebook.com/TheMightyKbc/.

“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, 5850 kHz, Thursday 0100-0200 UTC
(Wednesday evening in the Americas). Also look for a waterfall ID at the
beginning of the show.

Franco, HB9OAB, is transmitting digital SSTV in the KG-STV
format via WINB (Pennsylvania) analog, Saturdays 2200-2215 UTC, 9265
kHz. Best reception will be via receivers in the western USA.

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 in Thor
22 or IFKP, and messages are in MFSK32 (PA NBEMS is experimenting with
Thor 50×1 for messages). Messages usually 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 radiogram@verizon.net , or tweet to @SWRadiogram , and I
will let them know you are tuned in.

 

 

Todd in upstate New York provides this screenshot of the decoding of the
dual MFSK32, 31 March 2019, 2330-2400 UTC, 7780 kHz from WRMI Florida …

Fuente: Shortwave Radiogram, 5-7 April 2019: Digital modes with complete transparency



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