Shortwave Radiogram, 28-31 May 2020: Olivia modes — slowest, slower, slow

Shortwave Radiogram

I am not sure if I saw any advantage in last weekend’s Thor22 over our usual MFSK32, and not much over the much faster MFSK64. On my PC, the Thor22 performed poorly via WINB, but well via WRMI. There is something peculiar about WINB’s audio. The RSID’s don’t work (for me, anyway) and now the Thor22 doesn’t, either. But, via WINB, the MFSK modes are OK, and, for the most part, so are the images. It’s fun to try to solve these mysteries.

Another anomaly last weekend was the absence of 5850 kHz during the Sunday 0800-0830 UTC broadcast (7780 kHz was on the air). During a storm, one of the poles (like telephone poles) at
WRMI that hold the transmission lines between the transmitter and the antenna fell to the ground. The amazing crew at WRMI replaced that pole the next day.

Videos of last weekend’s Shortwave Radiogram (program 153) are provided by Scott in Ontario (Friday 1300 UTC) and by 2010DFS in Japan
(Sunday 0800 UTC on 7730 kHz, with more of this amazing reception and
decode through co-channel interference). The audio archive is maintained
by Mark in the UK. Analysis is prepared by Roger in Germany.

This weekend, we will experiment with three speeds of Olivia,
all 2000 Hz wide. These modes often work well when reception conditions
are poor, so let’s hope for bad reception this weekend. (And that
pretty much guarantees good reception this weekend.)  I don’t know the
official speeds of these Olivia modes, but I think they are about 24 wpm
for Olivia 64-2000, 40 wpm for Olivia 32-2000 and 80 wpm for 16-2000.
Slow. If reception is good, you can make it more challenging by using you old, cheap shortwave portable with the broken whip antenna.

After the Olivia, we’ll have time for seven images in the MFSK64 mode.

Here is the lineup for Shortwave Radiogram, program 154, 28-31 May 2020, in modes as noted:

1:49  MFSK32: Program preview
3:16  Olivia 64-2000: Recyclable rubber polymer, part 1**
6:52  Olivia 32-2000: Part 2**
11:05  Olivia 16-2000: Part 3**
15:43  MFSK64: This week’s images*
28:20  MFSK32: Closing announcements

* with images

** Turn off Fldigi squelch (SQL). Use bandwidth wide enough for
these 2000-Hz-wide modes, i.e. at least 2.5 kHz for SSB, 5 kHz
for AM.

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 | 15750 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 9925 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 text and images in various modes 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 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. 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, Wednesdays 2300 UTC (7 pm EDT) on 3536 kHz USB.

 

Amazing decode of the MFSK64 images, 24 May 2020, 0800-0830 UTC,
7730 kHz from WRMI Florida, by our friend in Japan @jushin_Perseus ,
also known as 2010DFS on YouTube. His Beverage antenna helps!

 

Fuente: Shortwave Radiogram, 28-31 May 2020: Olivia modes — slowest, slower, slow



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