We use Twitter @SWRadiogram extensively to share results of Shortwave Radiogram reception, and to send reminders about transmissions during the weekend. It is a simple and functional platform for that purpose. But, with uncertainties about the future of Twitter, I… Leer más ›

The slow browsing problem that I was lamenting last week has been resolved. I went into the Firefox settings and made various adjustments, applying the science (art?) of trial-and-error, and finally something worked. And so we move on to a… Leer más ›

Today in the Middle Atlantic, the weather is delightful (but we could use some rain). Shortwave propagation has been less than delightful, with static crashes from offshore storms adding to the mix. I hope conditions improve in time for this… Leer más ›

This weekend on Shortwave Radiogram, we will experiment with three flavors ofMFSK: MFSK16 (60 wpm), MFSK32 (120 wpm) and MFSK64. We use MFSK32 and MFSK64 most weeks. MFSK16 is slow, but it is often successful in poor reception conditions. Bad… Leer más ›

I am sending this preview of program 304 (11-16 May 2023) a few days early to give you time to download, install, and practice decoding the EasyDRF we will be using. EasyDRF is a version of HamDRM which can be… Leer más ›

As I type this, the windows in my office are open. Through the screen I can hear the grass-cutting machines, which seem to be a permanent feature in our neighborhood. Temperatures here in northern Virginia reached 87F/31C this week, and… Leer más ›

In Europe and North America, the moving forward of clocks for summer time is now complete. Check the schedule below, and be sure your conversions from UTC to local time are correct. This weekend’s Shortwave Radiogram includes two images of… Leer más ›

This will be another weekend of changes: Most of Europe will move its clocks forward on March 26. That same day the A23 HF (shortwave) frequency season begins. Many shortwave broadcast stations will change frequencies to adjust for seasonal propagation…. Leer más ›

In North America, the transition to “daylight savings time” is now complete. WINB maintains its schedule on Eastern Time in the USA, so Shortwave Radiogram will be one hour earlier by UTC. The WRMI frequencies used for Shortwave Radiogram stay… Leer más ›

This is the time of year when time changes and frequency changes can complicate our shortwave listening. In most of North America, clocks will move forward one hour on Sunday, March 12. The only impact this weekend is that the… Leer más ›

I missed most of last weekend’s show (program 293) while in Florida for a family gathering. Thanks to Al @WD4AH_Al and Mitch @Plano26 for monitoring the @SWRadiogram Twitter during my absence. In a sure sign of spring, last night I… Leer más ›

Snow and ice will affect much of North America this weekend. Good luck if you and your antennas are affected. Down here in Virginia, the weather will remain boring except for higher than normal temperatures. Shortwave reception will not be… Leer más ›

Here in northern Virginia, our strange winter of higher than normal temperatures and no snow continues. Maybe we will get some winter before winter is over. All of the Shortwave Radiogram broadcasts were transmitted as scheduled last week – except… Leer más ›

Lately all of our broadcasts have been without mishap. The Saturday 2300-2330 UTC is, however, “interesting” because of the noise that has been co-channel the  past few weeks. It sounds more like jamming than data, but this does not rule… Leer más ›