Hello friends,
Thanks to everyone who participated in last weekend’s exercise to
eliminate slant in MFSK images. Many of
you did not see any slant to begin with. This usually happens with direct
reception. But if reception is through an SDR, another sound card is involved,
increasing the chance for a clash in the sampling rates. This tweet shows how I was able to eliminate the slant
during the first image of vertical lines, so that the lines were perfectly (at
least to my eye) vertical during the second image.
Recording Shortwave Radiogram gives you another opportunity to
eliminate any slant in your MFSK images. You can make the RX ppm adjustment in
Fldigi, or use the Audacity software to change the speed of your recording. A
(+)100 ppm adjustment in Fldigi would be the same as a (+).01% adjustment in
the speed of your playback.
Videos of last weekend’s Shortwave Radiogram are provided by Scott in Ontario
(Friday 2030 UTC), 2010DFS in Japan
(Saturday 1600 UTC) (see also his Twitter thread showing an inexpensive D-808 receiver
connected to a Beverage antenna; his use of a voice recorder might have added
additional slant, which he corrected in time for the second image of vertical
lines), by Ralf in
Germany (Saturday 1600 UTC). Mark in
the UK maintains an audio archive. Roger in Germany provided analysis.
This weekend’s Shortwave Radiogram will be in our usual
combination of MFSK32, MFSK128, and MFSK64, with maybe a mystery mode (and
mystery image – to save it, click Save) during the closing music. The show will
include eight MFSK images.
Here is the lineup for Shortwave Radiogram, program 66, 21-24
September 2018, in MFSK modes as noted:
1:38 MFSK32: Program preview
2:55 US requiring registration of Chinese media in
the USA*
7:09 MFSK128: Wasps play a crucial role in the
ecosystem*
10:36 MFSK64: TESS space
telescope spots its first exoplanet*
13:35 Remote island bounces
back after its rats are eliminated*
19:19 This week's images*
27:07 MFSK32: Closing
announcements
* with image(s)
Please send reception reports to radiogram@verizon.net
And visit http://swradiogram.net
Twitter: @SWRadiogram or https://twitter.com/swradiogram (visit especially during
the weekend)
Facebook group: https://www.facebook.com/groups/567099476753304
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Shortwave Radiogram
Program 66
(21-24 September
2018)
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Friday
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2030-2100 UTC
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7780 kHz
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MFSK32
MFSK128
MFSK64
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WRMI Florida
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Saturday
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1600-1630 UTC
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9400 kHz
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Space Line, Bulgaria
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Sunday
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2330-2400 UTC
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7780 kHz
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WRMI Florida
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Monday
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0800-0830 UTC
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7730 kHz
5850 kHz
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WRMI Florida
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Slow Scan Radio transmits
SSTV images and text modes Wednesdays at 1830-1900 UTC on 6070 kHz via Channel
292 in Germany. The website is http://www.slowscanradio.com. Reception reports to x@xdv.me.
The Mighty KBC transmits to Europe Saturdays at
1500-1600 UTC on 9400 kHz (via Bulgaria), with the minute of MFSK at about 1530
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 the new winter frequency of 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/.
Italian Broadcasting Corporation (IBC) Five
minutes of MFSK32 is at the end of the 30-minute English-language “Shortwave
Panorama. For the complete IBC transmission schedule visit http://ibcradio.webs.com/
Broad
Spectrum Radio is transmitted by WRMI Florida Mondays at 0700-0800 UTC on 5850
and 7730 kHz. MFSK32 is broadcast during the second half hour of the show.
Reports to broadspectrumradio@gmail.com.
Thanks for your reception reports!
Kim
Kim Andrew Elliott, KD9XB
Producer and Presenter
Reporting on international broadcasting at https://twitter.com/kaedotcom