Category Archives: Guest Posts

It’s shortwave rodeo time!

Hi it’s FastRadioBurst 23 here letting you know what Imaginary Stations will be bringing to you via the shortwaves this week. On Sunday 25th August 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz they have WEST via Shortwave Gold. Don’t worry, there won’t be any quick on the draw competitions or mandatory poncho wearing but just some great western inspired tunes with whistling, twangy guitars, a bit of yodelling and some banjo picking. So next Sunday sit by the chuck waggon and put the shortwave radio on and strum along with your guitar to the sound of WEST.

Then via WRMI on Wednesday 28st August 2024 at 0200 UTC on 9395 kHz we’ll be bringing you yet another version of WEST for you campfire listening pleasure. So gather around the radio with all of your stablemates and enjoy a great old programme of way out western fun.

We now have a Patreon page for our regular listeners here. Monthly memberships are available for exclusive audio and zines.

For more information on all our shows, please send  to [email protected] and check out our old shows at our Mixcloud page here.

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More shortwave solutions for the summer

Hi it’s FastRadioBurst 23 here letting you know what Imaginary Stations will be bringing to you via the shortwaves this week, sunspots permitting of course. On Sunday 18th August 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz they have COOL 6 via Shortwave Gold. More summer vibes from the Imaginary Stations crew from the comfort of their sun lounger.

Then via WRMI on Wednesday 21st August 2024 at 0200 UTC on 9395 kHz we’ll be bringing you a back to school special of KMART, your “official supermarket shortwave radio station”. Expect voucher give-aways, extended opening hours and the best blue light specials on the planet (*All subject to availability of course). Tune in and enjoy an alternative to shopping on the shortwave dial.

We now have a Patreon page for our regular listeners here. Monthly memberships are available for exclusive audio and zines.

For more information on all our shows, please send  to [email protected] and check out our old shows at our Mixcloud page here.

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A Band Aid for the XHDATA D-220

Many thanks to SWLing Post contributor, Bob Colegrove, who shares the following guest post:


A Band Aid for the XHDATA D-220

By Bob Colegrove

In the olden days of analog radios, we would have generated a graph plotting frequency against a 0 to 100 linear bandspread scale. That permitted determination of a station’s frequency with varying degrees of accuracy.

The case of the charming little D-220 requires a simpler approach. The dial covers 5.6 MHz to 22 MHz in less than two inches. They could have cut off coverage at 18 MHz and gained a precious half inch of dial.

With the shortwave scale well below the pointer, I needed some additional guidance indicating where I was. Best not to get too fancy. I cut a strip off a sticky-back label and attached it to the dial right below the pointer. Using the left edge of the pointer as a guide, I marked off the location of each international broadcast band and a couple time stations. The width of each band isn’t much more than the point of a sharp No. 2 pencil. Any further resolution is hopeless, but at least you know what part of the spectrum you are in.

Red lettering is not part of the band aid.

Again, going by the old logarithmic analog dials you would expect the frequencies to be increasingly mashed together as you go higher. This is not the case with the D-220, nor do the increments appear to be very linear. At any rate, it is now relatively easy to tune from band to band.

The sensitivity and clarity of the D-220 is amazing. Perhaps it’s the green one.

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The COOL keeps on coming on shortwave!

Hi it’s FastRadioBurst 23 here letting you know what Imaginary Stations will be bringing the shortwave community this week. On Sunday 11th August 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz they have  yet another version of COOL, this time COOL 5 via Shortwave Gold. Like the last COOL shows, it’s summer vibes galore and tunes to listen to whilst on the sun lounger. Towels and suntan lotion at the ready please!

Then via WRMI on Wednesday 14th August 2024 at 0200 UTC on 9395 kHz we’ll be bringing you a back to school special of KMART, your “official supermarket shortwave radio station”. Expect voucher give-aways, extended opening hours and the best blue light specials on the planet (*All subject to availability of course). Tune in and enjoy an alternative to shopping on the shortwave dial.

We now have a Patreon page for our regular listeners here. Monthly memberships are available for exclusive audio and zines.

For more information on all our shows, please send  to [email protected] and check out our old shows at our Mixcloud page here.

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The Radio Phonics Laboratory

Fastradioburst23 here to let you know about a brand new book from Imaginary Stations contributor Justin Patrick Moore. The Radio Phonics Laboratory: Telecommunications, Speech Synthesis, and the Birth of Electronic Music is a radiocentric look at the origins of electronica. Radioheads will find much to enjoy in the pages of this tome including:

  • Elisha Gray’s Musical Telegraph, arguably the world’s first synthesizer that used telegraph wires to send music down the line to distant listeners.
  • Lee De Forest’s Audion Piano. Radio pioneer Lee De Forest used his invention of the triode vacuum tube, or audion, to make an electronic musical instrument, perhaps his least contentious invention!
  • The radio work and espionage activities of Leon Theremin, who worked as an engineer at a distant station deep within the Soviet Union where he discovered the principles to make his famous antenna-based instrument.
  • The avant-garde antics of the Lost Generation composer George Antheil and his collaboration with actress Hedy Lamarr that led to the development of the spread spectrum suite of transmission techniques that now permeate our everyday life wherever there is WiFi.

But that’s not all! At the heart of this narrative is the evolution of speech synthesis. Spanning the groundbreaking work of Homer Dudley at Bell Laboratories with his work on the voder and vocoder to the dual discovery of Linear Predictive Coding from the research done by Fumitada Itakura at Nippon Telegraph and Telephone in Japan to the parallel discoveries in the same field made by Manfred Schroeder and Bishnu S. Atal at Bell Labs. Linear Predictive Coding gets put to work whenever someone picks up a cell phone to make a call, or when they get on their DMR radio to join a net with their fellow ham radio friends across the world. Linear Predictive Coding was later put to work in the compositions of early computer music pioneer Paul Lansky at Princeton.

Tracing the early use of the vocoder in enciphered radio transmissions between Churchill and Roosevelt in World War II to its use by Robert Moog and Wendy Carlos, this is the story of how investigations into the nature of speech generated a tool to be used by the music makers who merged their voices with the voice of the machine.

But wait, there’s more! The creative use of these phonic frequencies really took hold when radio stations and radio companies spearheaded the creation of the first electronic music studios. These laboratories include:

  • Halim El-Dabh’s use of wire recorders loaned from Radio Cairo to create the first pieces of what was later called musique concrète, where raw sounds were manipulated to create a new kind of music.
  • Pierre Schaeffer’s creation of the Groupe de Recherches Musicales (GRM) under the auspices of the Radiodiffusion Nationale station in France, leading to the subsequent spread of musique concrète.
  • The genesis of the Studio for Electronic Music of the West German Radio (Westdeutscher Rundfunk) born out of early developments in elektrische music made by the countries experimental instrument builders.
  • The subsequent building of an electronic music studio at NHK in Japan.
  • The story behind the “sound-houses” of the legendary BBC Radiophonic Workshop, and its pioneers Daphne Oram and Delia Derbyshire.
  • The development of the Columbia-Princeton Electronic Music studio made in conjunction with the RCA company and the building of their gargantuan instrument, The RCA Mark II Synthesizer.
  • And further explorations in the work being done at Bell Labs where the computers made music under the guidance of Max Matthews leading to creative breakthroughs from composers Don Slepian and Laurie Spiegel.

Of particular interest in this realm to the radio buff is the work of John Chowning, a composer who worked out the principles of FM synthesis, essentially figuring out how to do frequency modulation in the audio domain. He went on to create the Center for Computer Research in Music and Acoustics at Stanford, which became a model for the kind of sound laboratory later implemented in France at IRCAM, Institute for Research and Coordination in Acoustics/Music.

This the story of how electronic music came to be, told through the lens of the telecommunications scientists and composers who transformed the dits and dahs of Morse code into the bleeps and blips that have captured the imagination of musicians and dedicated listeners around the world.

The Radio Phonics Laboratory is available directly from Velocity Press here in the UK and Europe. North American readers can find it on Bookshop.org here , Amazon.com here and fine bookstores everywhere.

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More of the Summer of COOL

Hi it’s FastRadioBurst 23 here letting you know what the Imaginary Stations crew will be bringing to the shortwaves this week. On Sunday 4th August 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz they have another version of COOL, this time COOL 4 via Shortwave Gold. Like the last COOL shows it’s all about those summertime tunes, songs about sun tan lotion, deckchairs, long drinks and cool nights. If you’ve loved the last few COOLs you’ll love this one. Shortwave on, sunscreen on and tune into COOL.

Then via WRMI on Wednesday 7th August 2024 at 0200 UTC on 9395 kHz we’ll be bringing you  another COOL show. This is different from the Shortwave Gold show but it will be in the same holiday, summertime spirit. So pour yourself a long refreshing drink (no matter what time it is in your location) and enjoy the weather.

We now have a Patreon page for our regular listeners here. Monthly memberships are available for exclusive audio and zines.

For more information on all our shows, please send  to [email protected] and check out our old shows at our Mixcloud page here.

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Dan Robinson Reviews the New Tecsun S-2200X Portable Receiver

Many thanks to SWLing Post contributor and supporter, Dan Robinson, who shares the following review:


Tecsun Delivers The S-2200X – New Life For A 16-Year-Old Cabinet Design

by Dan Robinson

Note: Please see an addendum of updates at the end of this post.

Some months ago, I learned from Anon-co that Tecsun planned to release an update to the S-2000 receiver, which for the past 16 years also sold under other names such as the Grundig Satellit 750 and later the Eton Satellit 750 and Eton Elite 750.

To say that this radio was long in the tooth is an understatement.

I remember seeing one when they first came out back in 2008 and I was never very impressed.  To me, the radio looked like a toy, and the performance did not impress.  The standout feature was the top-mounted rotatable antenna for MW/LW reception.  That was popular with those of us who own the Panasonic RF-2200 and it’s a great tool for MW.

Grundig Satellit 750

While popular with a certain segment of the listening hobby – beginners liked the 750 and even some veteran SWLs appreciated the retro design — the receiver was plagued by annoying issues, such as the famous wobbly tuning knob.  It also had limited selectivity, no synchronous mode, and mediocre SSB.

In 2013, The Monitoring Times (Larry Van Horn) took another look at the radio with the following memorable comments:

[MONITORING TIMES 2013]

“Needless to say some folks were not happy with our review of the 750 including Etón. In retrospect, over four years later, I would not change one single word I wrote in that review.  I believe we honestly gave a fair assessment of the unit that was shipped to us for review. If you read my previous review closely, you would see that most of my concerns back then had to do with quality control issues and most in our industry fully acknowledge that we were seeing some nasty stuff coming out of China back in 2008.”

So, measuring from 2008 when the first Eton 750 came out we’re now in 2024 and Tecsun has decided to preserve the cabinet design of the original radio while substantially upgrading the internals.

Enter the S-2200x

Photo by Anon-Co

Reviewers have obtained units from the first production run.  Tecsun has provided long-needed upgrades that put this radio on the same playing field as the very popular H-501 and PL-990 portables.

The 2200x adds a dedicated SYNC mode with its own front panel button.  AIR band is retained, though sadly coverage doesn’t extend up to give us the NOAA WEATHER frequencies.

My initial testing of the S-2200x shows that performance is excellent on SW, AM, and FM.  In contrast with portables from other manufacturers, SSB performance is excellent – in USB and LSB, tuning is smooth with no “warbling” and using the fine tuning control is a pleasure. Continue reading

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