Inicio › Broadcasting › Shortwave Radiogram, del 8 al 13 de Junio: programa 308

Shortwave Radiogram, del 8 al 13 de Junio: programa 308

Por elradioescucha el 09/06/2023

I hope the fires, smoke and haze that affected much of North America in the past week have not had major adverse effects on you. I don’t think they will impede our MFSK transmissions.

Thanks to all of you who participated in last weekend’s comparison of MFSK16, MFSK32 and MFSK64. My apologies for not tweeting my results during part of the weekend. On Sunday morning we discovered that our house had no internet access and no landline telephone, both provided by Verizon Fios. Attempts to fix it by way of self-troubleshooting and via the Verizon chat failed, so a Verizon technician visited on Monday. After checking all the systems, he determined it was a bad splitter in the Fios hub located a few blocks away. As part of the repair, he also replaced the Optical Network Terminal (ONT) on the side of our house, and the power supply for it, located in our storeroom. The new power supply no longer has a battery backup, so if we have a power failure, everything goes down.

Anyway, during the internet interruption, I was able to tune in (via direct reception) and decode Shortwave Radiogram broadcasts (thus demonstrating the concept). But I could not tune in via remote SDRs, nor could I provide or receive updates via Twitter and email.

The results of the experiments, based on your interesting reports, reminded me (because I had forgotten) why we don’t usually include MFSK16 in our programs. MFSK16 is a robust mode in difficult reception conditions, but MFSK32 text succeeded almost every time MFSK16 succeeded. So we might as well transmit MFSK32.

As for the images, I noticed a rather high failure rate among the preambles (triggers) of the MFSK64 images. This is probably because of the speed of their transmission. So I am considering using MFSK32 for the images, at least on a trial basis. The resolution of the MFSK32 images is fairly close to that of the MFSK64 images. (Images this weekend will be MFSK64.)

A video of last weekend’s Shortwave Radiogram (program 307) is provided by Scott in Ontario. 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 308, 8-13 June 2023, in MFSK modes as noted:

1:46 MFSK32: Program preview
2:58 MFSK32: SpaceX’s Starlink Wins Contract for Ukraine
5:52 MFSK64: Why was brightest cosmic explosion exceptional?*
10:44 MFSK64: This week’s images*
28:37 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/

Anuncios