Shortwave Radiogram, 29 October-1 November 2020: The wide world of wide modes

In this note, we will discuss 1) the winter time changes and 2) this weekend’s experiment with the new MFSK wide modes.

Winter time changes. By now, most of Europe has turned clocks back one hour for “winter” time. And on Sunday, most of North America will do the same.

The program schedule on frequencies used by WRMI for Shortwave Radiogram stays with UTC, so Shortwave Radiogram will be one hour earlier by local time in most of Europe, and one hour earlier by local time in most of North America.

The program schedule on WINB 9265 (analog) will stay with Eastern time after Sunday, so it will be one hour later by UTC.  In Europe, therefore, the WINB airplays of Shortwave Radiogram will this week be one hour earlier by UTC, but next next back to the local times you are used to, though one hour later by UTC.

And to add to the confusion, the WINB DRM schedule stays with UTC. The frequency for the Shortwave Radiogram DRM transmission changes to 13655 kHz.

Experiment with new MFSK wide modes. This post (from 28 October) explains the new MFSK wide modes and our experiment with them this weekend.

Decoding the new modes will require the Fldigi alpha version 4.1.15.05.
If you don’t have this version, or if you use the Android apps TIVAR or
AndFlmsg, only about five minutes of this weekend’s broadcast will be
gibberish.

If you do have Fldigi 4.1.15.05, please note that the text will not
print out in the receive pane until about 20 seconds after you hear the
sound of the MFSK wide modes.

The experiment with the MFSK wide modes will be most interesting in
challenging reception conditions, because that is what they are designed
for,

Last week’s experiment with DominoEX22. For the most
part, the DominoEX22 with forward error correction (FEC) was, not
surprisingly, more successful than the DomnoEX22 without FEC. But the
differences were usually subtle and not always consistent. Our MFSK32
almost always performed better than both flavors of DominoEX22, and in
most cases, so did MFSK64. A reminder of why MFSK32 and MFSK64 are our
“go to” modes.

Videos of last weekend’s Shortwave Radiogram (program 175) are provided by Scott in Ontario (Friday 1300 UTC) and Frigid RF in Virginia (Saturday 1330 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 176,   29 October-1 November 2020, in MFSK modes as noted:

1:49  MFSK32: Program preview (now)
3:38  MFSK32: Volcanoes on Jupiter’s moon Io
6:54  MFSK32WIDE: Continued**
9:52  MFSK64WIDE: Continued**
11:45  MFSK64: Continued
13:24  MFSK64: This week’s images*
28:37  MFSK32: Closing announcements

* with images

** These new experimental modes require Fldigi alpha version
4.1.15.05 or newer. If you do not have this version, you can
record this broadcast and decode the new modes later with version
4.1.15.05.

You will not see text printing until about 18-20 seconds after
you hear these new modes.

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 Gateway Wiki https://wiki.radioreference.com/index.php/Shortwave_Radiogram_Gateway

Shortwave Radiogram Transmission Schedule

| 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 | 13655 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 5960 kHz, via Germany. A 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” 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.
thisisamusicshow@gmail.com .  www.twitter.com/ThisIsAMusicSho/
@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 1200 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 radiogram@verizon.net , 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 at 0000 UTC  (7 pm EST) on 3536 kHz USB.

 

Al in Florida had a better decode with the DominoEX22 with FEC
(right) than without,  24 October 2020, 1330-1400 UTC, on 15770 kHz from
WRMI (also in) Florida …

Fuente: Shortwave Radiogram, 29 October-1 November 2020: The wide world of wide modes



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