You may have read about the snow in the Washington DC area. The heavy wet snow on January 3, with additional freezing after dark, left many vehicles stranded on Interstate 95, the main highway south of Washington, some for 24… Leer más ›

Merry Christmas, if you are celebrating. And no matter what you might be celebrating this weekend, try to tune in to an unusually festive edition of Shortwave Radiogram.There will be 18 images in MFSK. Each one will be the same… Leer más ›

The autumn leaves have almost all fallen here. The leaves have been raked to the street, where the county vacuum truck will pick them up eventually. That’s the event that indicates the winter has arrived in our neighborhood. At least… Leer más ›

Happy Thanksgiving to listeners in the United States. No Thanksgiving is complete without tuning in and decoding Shortwave Radiogram. You can do this Friday at 0030-0100 UTC (Thursday 1930 EST, 1830 CST, 1730 MST, 1630 PST) on 9265 kHz from… Leer más ›

One more reminder that WRMI (on its frequencies used for Shortwave Radiogram) has, since the North American time changed, stayed with UTC for its program schedule. So, for most of Europe and North America, Shortwave Radiogram is one hour earlier… Leer más ›

Most of North America will move clocks back one hour on November 7. Europe did its time change last weekend. (One of our news item this week is about what we in North America call “daylight saving time.”) On the… Leer más ›

If you are participating in Halloween festivities this weekend, have a good a safe time. This weekend, most of Europe will change clocks back one hour. This Sunday (31 October), transmissions via WRMI will be one hour earlier by European… Leer más ›

This weekend’s Shortwave Radiogram was almost a replay of last week’s Shortwave Radiogram. The hard disk drive on my PC is in the process of failing, working only intermittently, and triggering “S.M.A.R.T. status bad” warnings on boot-up. Fortunately, Windows 10… Leer más ›

The Vienna Wireless Society, the amateur radio club in Vienna, Virginia, near Washington DC, kindly invited me to speak to their meeting on September 24 about Shortwave Radiogram, including its history, goals and great audience. A video of that presentation… Leer más ›

Autumn has officially begun. October is almost here. Among other changes in the air, shortwave propagation is shifting.  Try Shortwave Radiogram times and frequencies that you haven’t tuned in recently. Videos of last weekend’s Shortwave Radiogram (program 222) are provided… Leer más ›

I hope that everyone is OK after Hurricane Ida and its remnants. We hope electricity and other elements of normalcy are restored to Louisiana as soon as possible, although it may take days or weeks. Here in northern Virginia, we… Leer más ›

Between interesting solar conditions and thunderstorms lurking, at least here in North America, it could be an interesting weekend for receiving and decoding the modes on Shortwave Radiogram. A video of last weekend’s Shortwave Radiogram (program 218, Friday 1300 UTC)… Leer más ›

This reminder that you can see results, including decoded images, of Shortwave Radiogram listeners at the Twitter account @SWRadiogram. If you are not on Twitter, you can visit http://twitter.com/swradiogram and scroll down. A video of last weekend’s Shortwave Radiogram (program 214, Friday… Leer más ›

Last weekend’s broadcast (program 213) ended with the painting “Usonian View” by Michelle Lewis. Here is the painting as received by Pete Brunelli in Rhode Island, as included in Pete’s blog post about last weekend’s show …  I selected this painting because… Leer más ›

Thanks to everyone who reported on last week’s test of gaps and no gaps before the image headers. No prominent pattern emerged during my first look at the results, but I need to do a more systematic analysis. My usual… Leer más ›

Shortwave Radiogram listeners have kindly offered suggestions for experiments with our digital modes. Tobias in Germany suggests that eliminating the brief silence (about 0.6 second). between the text introduction of an MFSK image and the image transmission, can reduce or… Leer más ›

If you are participating in amateur radio’s Field Day this weekend, enjoy the event and good luck in the contest. The only Shortwave Radiogram during Field Day operating hours is Sunday 0800-0830 UTC on 5850 and 7730 kHz. Tune in… Leer más ›

We can claim success with last week’s transmission of Russian, especially because it was received successfully via SDRs in Russia. This was during two transmissions, including Sunday 2330. Videos of last weekend’s Shortwave Radiogram (program 208) are provided by Scott in Ontario (Friday… Leer más ›

This week, after months of planning, preparation, and purchases, three new amateur radio antennas were installed on my roof. They are 1) a 10 and 6 meter vertical, 21 feet (6.4 M) tall, 2) a homebrew 10 and 6 meter… Leer más ›

One change to our transmission schedule take effect this weekend: The Saturday (Friday in the Americas) broadcast at 0000-0030 UTC on 9955 kHz is no longer available. We hope we can return to 9955 in the future, because this frequency… Leer más ›

This weekend we will finally transmit a photo of a cicada. The present brood of the 17-year cicadas, and their wonderful sound, won’t be around much longer. And I probably won’t be around for their next appearance, so I am… Leer más ›