We’ve had two frustrating weeks with out Friday 1300-1330 UTC broadcast, 15770 kHz from WRMI Florida – which is usually the transmission that reaches the farthest in world. Last week, Shortwave Radiogram was missing, with the Overcomer Ministry in its place, due to an error in the WRMI automated playout system. The previous week, Shortwave Radiogram from the week before was heard because of an uploading error on my part. This week, let’s hope for a return to normalcy.

Shortwave Radiogram listeners have noticed the absence of WINB DRM transmissions, Friday 1400-1430 UTC on 15735 kHz from WINB Pennsylvania. In my weekly email to WINB (to let them know that SWRG has been uploaded), I asked about this. “DRM is not on the air anymore,” was the reply. No further details.

The WINB DRM transmission did not have much of an audience because the signal usually did not reach the threshold for a successful DRM decode. Few listeners have the devices needed to decode DRM (although the KiwiSDRs have a DRM mode, which works if the signal is very good). The 8.28 kbps bitrate resulted in grainy MFSK images, but it was fine for MFSK text if the signal was good enough. 

That low bitrate may have been due to the fact that WINB was  only using half of the 10 kHz bandwidth of a typical DRM broadcast signal for its voice content, and for our MFSK tones. The other half – sometimes the lower half, sometimes the upper half – was for some unspecified data. I suspect no content was actually being transmitted on the data half (left in the image below).  

And on the subject of schedule changes, this reminder that the transmission on 9955 kHz from WRMI Florida, 1430-1500 UTC, has been moved from Tuesdays to Sundays. This is beamed southeast into Cuba, and a half-hearted Cuban jammer is usually audible on the frequency. Reception is usually also possible in the opposite direction, e.g. Georgia (USA), Tennessee and the Midwest. And 9955 will venture farther into the world as autumn approaches.

A video of last weekend’s Shortwave Radiogram (program 317) is provided by Scott in Ontario (who tuned in Saturday at 2300 UTC because of the missing Friday 1300 UTC broadcast). The audio archive is maintained by Mark in the UK. Analysis is provided by Roger in Germany.

Here is the lineup for Shortwave Radiogram, program 318, 17-21 August 2023, in MFSK modes as noted:

  1:43  MFSK32: Program preview
  2:49  MFSK32: Colorful new paints block heat*
  9:27  MFSK64: Why the BBC is selling its iconic sound studios*
14:10  MFSK64: This week’s images*
27:31  MFSK32: Closing announcements

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       |
|----------|---------------|------------------|-------------------|
| 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: 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.  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. thisisamusicshow@gmail.com   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: radiopopshop@gmail.com.

Thanks for your reception reports!

Kim

Kim Andrew Elliott, KD9XB

Producer and Presenter

Shortwave Radiogram

Fuente: https://swradiogram.net/

Categorías:Broadcasting

Etiquetas:Digital Modes, Frecuencias, MSFK64, Onda Corta, Shortwave, SW, SWL