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KA3BVJ > SWL 09.07.21 02:34l 68 Lines 3963 Bytes #999 (0) @ EU
BID : 27125_KA3BVJ
Read: GUEST
Subj: Shortwave RadioGram
Path: IW8PGT<IZ3LSV<DB0ERF<DK0WUE<F1OYP<F1MAC<F4BWT<GB7YEW<AB0AF<KE0GB<
N7HPX<N3HYM<KA3BVJ
Sent: 210709/0000Z 27125@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
Hello friends
Last week (program 211), at the suggestion of Tobias in Germany, we eliminated the short (about 0.6 second) gap between the text introduction and the image itself. This seemed to result in fewer failed image due to missed headers. Why is the gap a problem? It might be due to HF noise causing stray characters that clash with the header. Or it could be a loss of synchronization in Flidigi during the gap.
This weekend, we will try a slightly more scientific study of the gap issue. The program will include seven MFSK64 images. Four will be transmitted using the new method of no gap between the text introduction and the image. Three will still have the gap. ...
Locomotive NO GAP
Bee GAP
Moths NO GAP
Fireworks GAP
Middle Falls NO GAP
Heron GAP
Painting NO GAP
From your reports, we can compare the occurrence of missed headers among the gap and no-gap images.
Videos of last weekend's Shortwave Radiogram (program 212) are provided by Scott in Ontario (Friday 1300 UTC) and Ralf in Germany (Sunday 2330 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 212, 8-11 July 2021, in MFSK modes as noted:
1:41 MFSK32: Program preview
2:46 First X-class major solar flare of Solar Cycle 25
7:54 MFSK64: Test of battery powered railroad locomotives*
17:20 This week's images*
28:31 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 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 DRM WINB Pennsylvania
Saturday 0230-0400 UTC 9265 kHz WINB Pennsylvania
Saturday 1330-1400 UTC 15770 kHz WRMI Florida
Sunday 0800-0830 UTC 5850 kHz
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: 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-64 text and image near the end of the broadcast. Its transmitted on WRMI, Thursdays at 0200-0300 UTC on 5850 kHz (Wednesday evening in the Americas). Also look for a waterfall ID at the beginning of the show. thisisamusicshow@gmail.com www.twitter.com/ThisIsAMusicSho/ @ThisIsAMusicSho https://thisisamusicshow.com
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 1130 UTC on 3583 kHz USB. 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.
Thanks for your reception reports!
Kim Andrew Elliott, KD9XB
Producer and Presenter
Shortwave Radiogram
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