Thanks to Al in Florida, WD4AH, @WD4AK_Al , for moderating the @SWRadiogram Twitter account and helping with transmission tasks, 26 September-6 October, while my wife and I were in eastern Canada and Maine for a vacation. A video of program… Leer más ›

Last weekend’s “hidden message” in BPSK63F at 70 Hz was fairly successful. Several listeners reported successful decodes. It looks like 70 Hz will be our standard frequency for text that is mostly inaudible but usually decodable. There will be no hidden message… Leer más ›

Today I had difficulties uploading Shortwave Radiogram to WINB. We will find out at  2330 UTC if the correct program (number 117) is transmitted. Last weekend’s hidden message in Thor Micro at 70 Hz was mostly successful. This weekend, it… Leer más ›

Please note the  new “winter” frequency, 5960 kHz, for The Mighty KBC. The schedule is below. Hurricane Dorian may be an issue this weekend. It is expected to hit somewhere in Florida on Monday. However, on Sunday, winds in the… Leer más ›

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… Leer más ›

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… Leer más ›

Unless I am interrupted by some urgent task, this notice should be posted on time, i.e. before the first broadcast of Shortwave Radiogram Thursday at 2330 UTC. Which is an improvement over the late notices during the past two weeks…. Leer más ›

I’m late again with this weekly preview. 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… Leer más ›

Sorry that I am late with this week’s notice. The first broadcast (Thursday, 11 July 2019, 2330 UTC) has already been transmitted. You can see some results below. Videos of last weekend’s Shortwave Radiogram (program 107) are provided by Scott… Leer más ›

We had a good week last weekend, with reception that was at least adequate for most listeners, and many great reception reports. Videos of last weekend’s Shortwave Radiogram (program 106) are provided by Scott in Ontario (Friday 1300 UTC), Ralf… Leer más ›

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… Leer más ›

This weekend our modes will again be MFSK32 and MFSK64. These modes work very well in shortwave broadcast conditions, with MFSK32 more successful, although slower, if reception is somewhat difficult. Now we need a simple, receive-only, decode-only software for PCs,… Leer más ›

This reminder that listeners’ results from last weekend and every weekend are available at the Twitter account @SWRadiogram. If you are not on Twitter, visit https://twitter.com/swradiogram – and scroll down. Videos of last weekend’s Shortwave Radiogram (program 102) are provided… Leer más ›

Thank you to everyone who tuned in and decoded last weekend’s program 100 of Shortwave Radiogram. And thanks for the kind wishes. The next benchmark is two years, sometime in June, but I can’t recall the exact date, so it… Leer más ›

Last week’s ASCII art was largely successful, with several examples of a crisp SHORTWAVE RADIOGRAM even in difficult reception conditions. You can see examples below. Videos of last weekend’s Shortwave Radiogram (program 99) are provided by Scott in Ontario (Friday… Leer más ›

Last weekend’s Shortwave Radiogram was a reminder of the ability of MFSK16 to provide a correct decode even in difficult shortwave conditions. Thank you for your reception reports, especially listeners in Japan who decoded, or attempted to decode, the excerpt… Leer más ›