Mid-winter (in the Northern Hemisphere) has created several opportunities for good shortwave reception – and some frequencies that are impossible to hear, depending on your location. You can see listeners’ results at Twitter @SWRadiogram, or if you don’t have a… Leer más ›

What better way to bring in the new year 2021 than decoding the modes on Shortwave Radiogram? Thank you for your friendship and support, and for tuning in and decoding, during 2020. May the new year bring less virus and… Leer más ›

Hello friends, Because of  increased solar activity, and because of conditions generally during these months near the solstice, reception and decoding will be interesting in the next few weeks. For example, the 15770 kHz transmissions, directed to Europe, might be… Leer más ›

Hello friends, Happy Thanksgiving to listeners in the USA. I’m thankful for the great global group of radio enthusiasts who tune in, decode, and keep in touch. Last week I mentioned that the Sunday 0800-0830 UTC broadcast (the red-eye) on… Leer más ›

Hello friends, Is anyone using, or attempting to use, Fldigi with the MacOS Big Sur? John in Texas, who reports every week via email, writes: “just upgraded to Apple’s new OS Big Sur 11.0.1 and FLDigi seems to communicate with… Leer más ›

  During the past two weekends, we saw a few examples (including this one) of the new MFSK wide modes providing a improvement over the conventional MFSK32 and MFSK64. While the tests were mostly inconclusive, we did learn about the… Leer más ›

  With the winter time change now fully in effect, please note that broadcasts of Shortwave Radiogram from WRMI Florida stay with their UTC times, so they are one hour earlier by local time in most of North America and… Leer más ›

In this note, we will discuss 1) the winter time changes and 2) this weekend’s experiment with the new MFSK wide modes. Winter time changes. By now, most of Europe has turned clocks back one hour for “winter” time. And… Leer más ›

  Apologies for the missing transmission Sunday, 18 October, 2330-2400 UTC on 7780 kHz. It’s an old WRMI transmitter, and such interruptions occur occasionally. The transmitter is back on the air now, and let’s hope it’s still operating this Sunday…. Leer más ›

  With difficult reception this time of year in some parts of the world,this weekend we will transmit a slow, robust mode: Olivia 32-1000 (32 tones, 1000 Hz wide). The extra “twist” in this exercise is that the Olivia 32-1000… Leer más ›

  Last weekend’s excerpt of Hungarian text from the revived RFE/RL Hungarian Service was received and decoded successfully all over the world, including all the diacritics. Here is an example as transmitted from Florida and received in, appropriately, Hungary. Videos… Leer más ›

  This weekend (5-6 September), The Mighty KBC moves to its winter frequency of 5960 kHz (replacing 9925 kHz), for its transmission from Nauen, Germany to North America, Sunday 0000-0200 UTC (Saturday 8-10 pm EDT). A minute of MFSK64 is… Leer más ›

  Last weekend’s experiment with Belarusian text from RFE/RL was generally successful. It was also timely, given the interdiction of the internet in Belarus. This tweet showing distant reception of the Belarusian text using simple equipment generated much interest.  For… Leer más ›

Radiogram transmite texto e imágenes digitales desde un transmisor de onda corta analógico. El programa es producido y presentado por el Dr. Kim Andrew Elliott.