Thanks to Daz Man in Australia for producing last week’s special EasyDRF transmission. And thanks to everyone who participated by tuning and decoding, or attempting to decode, whether you were successful or not.
When it worked, the EasyDRF results were dazzling: A fully formatted web page with links and animation, and no text errors. Also, images that were perfect, not fuzzy at all, and larger than our typical MFSK images. (See results in California at the bottom of this post, and more at @SWRadiogram on Twitter.
EasyDRF is derived from HamDRM, the amateur radio version of DRM (Digital Radio Mondiale). Like broadcast DRM, EasyDRF produces results that are perfect – or nothing at all. Thus, in typical shortwave conditions, where our MFSK might drop a few characters, and the images might be slightly to moderately fuzzy, EasyDRF may not work. For this reason. we will stay with MFSK32 and MFSK64, and occasionally other modes, on Shortwave Radiogram.
Experiments with EasyDRF should definitely continue, in separate time slots. It will work well on shortwave paths where reception is usually good, e.g. UK to western Europe, or southern USA to the Midwestern USA and Canada. And it would be great to try EasyDRF on AM broadcast radio. Do you know of a local AM station that would be willing to try some experiments? Of course, EasyDRF would work on FM broadcast radio, as well.
A video of last weekend’s Shortwave Radiogram (program 304) is provided by Scott in Ontario (Friday 1300 UTC). You can decode the EasyDRF from the audio of his video. His reception allows for the successful decoding of the html and all but the last two images. Analysis is prepared by Roger in Germany.
Here is the lineup for Shortwave Radiogram, program 305, 18-23 May 2023, back in our in MFSK modes as noted:
1:39 MFSK32: Program preview
2:47 MFSK32: Jupiter probe antenna finally deploys
5:58 MFSK64: Myanmar consolidates control of telecom providers
11:28 MFSK64: This week’s images*
27:33 MFSK32: Closing announcements
* with image(s)
Please send reception reports to firstname.lastname@example.org
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 | |----------|---------------|------------------|-------------------| | Friday | 0030-0100 UTC | 9265 kHz | WINB Pennsylvania | | Friday | 0530-0600 UTC | 7780 kHz | WRMI Florida | | Friday | 1300-1330 UTC | 15770 kHz | WRMI Florida | | Friday | 1500-1530 UTC | 15755 kHz DRM | WINB Pennsylvania | | Saturday | 0330-0400 UTC | 9265 kHz | WINB Pennsylvania | | Saturday | 2300-2330 UTC | 7570 kHz | WRMI Florida | | Monday | 0800-0830 UTC | 5850 kHz | WRMI Florida |
The Mighty KBC transmits to Sundays at 2200-2400 UTC (5-7 pm EST) on 5950 kHz from WRMI Florida. A minute of MFSK64 is at about 2330 UTC. Reports to Eric: email@example.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. It’s 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. firstname.lastname@example.org www.twitter.com/ThisIsAMusicSho/ @ThisIsAMusicSho https://thisisamusicshow.com
Pop Shop Radio from British Columbia, Canada, includes “a whole variety of pop music, such as records from the 1960s and 1970s that were played on Top-40 radio stations not only in North America but also on offshore radio and stations like Radio Luxembourg.” The programs now include some MFSK text and an image. Website: popshopradio.ca. Twitter: @popshopradio1 Email: email@example.com.
Thanks for your reception reports!
Kim Andrew Elliott, KD9XB
Producer and Presenter