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Shortwave Radiogram, 22-25 August 2019

Our “hidden message” last week in the PSK125R mode was not as successful as the BPSK63F two weeks previously. Because the PSK125R is a wider mode, I had to put it as low as possible to prevent it from being audible. This put the lower part of the PSK125R right up against the carrier, and too low for many receivers …

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DRM newsletter august 2019

The DRM for FM test and demonstration in St Petersburg is going on and the reports are that the quality of the audio is excellent, to the delight of the organisers and Consortium participants (RFmondial, Fraunhofer IIs, NXP and Gospell). The Gospell receiver has also announced a new firmware update for its DRM30 receiver and its capacity to present text …

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SPECIAL DRM TRANSMISSIONS DURING HFCC MEETING IN ARGENTINA – 26-29 AUGUST

Special DRM shortwave transmissions are being planned for the special meeting of HFCC to be held in Buenos Aires, Argentina, 26-29 August. They will be broadcast by Encompass Digital Media Services 16.00-17.00 UTC on 21630 kHz from Ascension Island on a bearing of 245 degrees. On each of the 4 days the content will be supplied by a different broadcaster: …

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Shortwave Radiogram, 15-18 August 2019

Many thanks to Mike Agner, KA1JJZ, @MakeAgner, who has prepared two very good wikis on how to decode the modes on Shortwave Radiogram. This one deals with decoding on PCs … https://wiki.radioreference.com/index.php/Decoding_the_SW_Radiogram_Broadcasts And this is for users of TIVAR on Android devices … https://wiki.radioreference.com/index.php/Decoding_the_SW_Radiogram_Broadcasts_with_TIVAR As always, wikis are works in progress, so if you have suggestions for additional information, please …

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Shortwave Radiogram, 8-11 August 2019

Last weekend, Shortwave Radiogram included a brief “hidden message” during the closing music. It was in the BPSK63F mode, centered on 50 Hz. At that very low audio frequency, it was not audible. I did not publicize this message last week, because I was not sure that data at such a low audio frequency would actually be pass through the …

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Shortwave Radiogram, 1-4 August 2019

There were not very many responses last week to my question about whether you prefer “natural” line wrapping versus the CR/LF that I usually put at column 65 (or less). But the answers I did get favored the line breaks at 65. We will try it again this weekend: Natural wrapping in the MFSK32 news item (Ethiopia trees), and the …

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Shortwave Radiogram, 25-28 July 2019

Unless I am interrupted by some urgent task, this email should reach you on time, i.e. before the first broadcast of Shortwave Radiogram Thursday at 2330 UTC. Which is an improvement over the late emails during the past two weeks. I usually produce Shortwave Radiogram with a CR/LF (carriage return/line feed) at column 65, meaning each line has no more …

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Shortwave Radiogram, 18-21 July 2019

I’m late again with this weekly email. After producing Shortwave Radiogram on Thursday, I sometimes don’t have the time – or energy – to produce this email until the next day. I will try to get back on schedule next week. This weekend’s show is in the usual MFSK32 and MFSK64, with nine images. Here is the lineup for Shortwave …

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Russia Studies DRM in the FM Band

Russia will begin testing the Digital Radio Mondiale digital radio standard in the FM Band in July in St. Petersburg. Russian firms Digiton and Triada TV are working with Fraunhofer IIS, RFmondial, chipmaker NXP and others to carry out the pilot. The organizers will install a DRM-capable transmitter mid-July and begin regular simulcast broadcasts (DRM for FM) immediately after site acceptance checks …

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Shortwave Radiogram, 11-14 July 2019

Sorry that I am late with this weekly email. The first broadcast (Thursday 2330 UTC) has already been transmitted. You can see some results below. This weekend’s show is in the usual MFSK32 and MFSK64, with nine MFSK64 images. Here is the lineup for Shortwave Radiogram, program 108, 11-14 July 2019,  in MFSK modes as noted:  1:43  MFSK32: Program preview …

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Shortwave Radiogram, 27-30 June 2019

Thanks to those of you who offered suggestions and assistance as I prepare a new guide to decoding the modes, especially making the audio connection between the radio and the computer or Android device.  If I have not responded directly yet, I will soon. The project is slowly making progress. This weekend’s show is in the usual MFSK32 and MFSK64, …

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Shortwave Radiogram, 20-23 June 2019

A prospective Shortwave Radiogram listener sent an email asking about the basic equipment needed to receive and decode the modes. This reminded me of the need to revisit the How to Decode the Modes of the Shortwave Radiogram website. It would seem all that is needed is a radio and a computer, with a patch cord from the earphone jack …

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