Category Archives: Guest Posts

The Ionosphere’s a right old mystery

Hi it’s FastRadioBurst 23 here letting you know what the Imaginary Stations crew will be bringing to those shortwaves this week. On Sunday 23rd June 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz they have another Name that theme show (WMMR) via Shortwave Gold. Like the last NTT show, it has a mystery theme running throughout and we ask our listeners to guess what that theme was, once the show is aired. There will be a special eQSL for the first correct winner. Tune in to find out more details on how to enter.

Then via WRMI on Wednesday 26th June 2024 at 0200 UTC on 9395 kHz there’s another version of WMMR. This time it’s a mystery mix which will contain all sorts of eclectic tunes pulled out of DJ Frederick’s record collection but even we don’t know what the show will contain. One thing it will be is interesting. Tune in and enjoy. More on WMMR below:

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 your collection of words with spaces in between to [email protected] and check out our old shows at our Mixcloud page here.

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Shortwave’s the WORD

Good day shortwave folks from myself FastRadioBurst 23. Here’s some text from the Imaginary Stations crew letting you know of our audio communications this week. On Sunday 16th June 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz we bring you more on the WORD theme with KRBR via Shortwave Gold.

We will be bringing you some additional punctuation, acronyms, commas (including one especially flown in from Oxford in the UK) and a bit of wit from Roget and his Synonyms (if there’s any space left on the page). We will also be hearing from a special guest from the WHPY era. Listen in for more words via the ionosphere.

Then via WRMI on Wednesday 19th June 2024 at 0200 UTC on 9395 kHz we bring you the original WORD show. We’ve words and letters, books, (Radio Phonics) laboratories, libraries, acronyms, verbs, adverbs and possibly an appearance from the Jazz influenced An ampersand or two. We must make it very clear that this show is in no way connected to STET, the very popular proofreader’s radio station. We apologise for any confusion that it may have caused last week.

Here’s more on WORD:

For more information on all our shows, please send your collection of words with spaces in between to [email protected] and check out our old shows at our Mixcloud page here.

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The Ionosphere’s a right old mystery

Hi it’s FastRadioBurst 23 here letting you know what the Imaginary Stations crew will be bringing to those shortwaves this week. On Sunday 23rd June 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz they have another Name that theme show (WMMR) via Shortwave Gold. Like the last NTT show, it has a mystery theme running throughout and we ask our listeners to guess what that theme was, once the show is aired. There will be a special eQSL for the first correct winner. Tune in to find out more details on how to enter.

Then via WRMI on Wednesday 26th June 2024 at 0200 UTC on 9395 kHz there’s another version of WMMR. This time it’s a mystery mix which will contain all sorts of eclectic tunes pulled out of DJ Frederick’s record collection but even we don’t know what the show will contain. One thing it will be is interesting. Tune in and enjoy. More on WMMR below:

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 your collection of words with spaces in between to [email protected] and check out our old shows at our Mixcloud page here.

Spread the radio love

Listening In Brazil ZP-30 Radio Station, “The Voice Of Paraguayan Chaco”, AM 610 kHz.

Many thanks to SWLing Post contributor, Carlos Latuff, who shares the following guest post:


Listening In Brazil ZP-30 Radio Station, “The Voice Of Paraguayan Chaco”, AM 610 kHz.

by Carlos Latuff

The first time I tuned on to ZP30 “The Voice of Paraguayan Chaco”, a Christian radio station from Paraguay, was during tests with Innova KV-12002. It was 7 p.m. Brasilia time, and when I turned on the receiver, I came across a medium-wave broadcast with an announcer speaking in German. This surprised me because the medium-wave stations I usually receive at night in Porto Alegre, Brazil, are from Argentina, Paraguay, and Uruguay, and none typically broadcast in a language other than Spanish.

I listened to the news bulletin, entirely in German, and throughout the transmission, I noticed the word “Paraguay” mentioned a few times. I concluded that it must be a Paraguayan radio station broadcasting in German. A quick Google search for radio stations in Paraguay broadcasting in German led me to ZP-30. I found their website, tuned in to the streaming audio, and confirmed I was listening to the same station on my radio.

Check out the ZP-30 website here: https://www.zp30.com.py

At that moment I recorded a video of the radio station playing German songs. I wanted the news bulletin, but I found it quite difficult, either due to problems with propagation, other kinds of interference, or due to a station that operates on the same frequency and that sometimes overpowers the Paraguayan broadcaster.

It took me almost a week to record the news bulletin with decent audio quality, using a ferrite rod AM antenna and my good ol’ XHDATA D-808 receiver.

This station, in addition to German and Spanish, broadcasts news and Christian preaching in languages ??spoken by indigenous communities from the Chaco region in Paraguay.

In Brazil, there was a migration of AM stations to FM, which left the medium-wave spectrum vacant. I believe that, from now on, it will be possible to listen to stations that I had never heard before. Stay tuned!

Some Christian preaching in German:

(Attached a video I made of ZP-30 radio station broadcasting news in German. Porto Alegre, June 4, 2024)

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I am the morning DJ on WORD

FastRadioBurst 23 letting you know of our Imaginary Stations transmissions this week. On Sunday 9th June 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz we bring you a show called WORD to Europe via Shortwave Gold. Expects words and letters, books, (Radio Phonics) Laboratories, libraries, acronyms, verbs and even an interview with the up-and-coming Wordrock band “Abbreviations and Ampersands” if time allows and loads more.

Our second show is another edition of the wonderful Shortwave Music Library on Wednesday 12th June 2024 at 0200 UTC on 9395 kHz via WRMI. Expect all sorts of eclectic music selections of the finest quality from DJ Frederick.

Here’s more on WORD.

For more information on all our shows please email [email protected] and check out our Mixcloud page here.

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The Giant Antennas of Shanghai Coast Radio Station (XSG)

Many thanks to SWLing Post contributor, Michael (BD4AAQ) who shares the following guest post:


Shanghai Coast Radio Station (XSG):

Those Giant Antennas!

The 17th of May is the World Telecommunication Day. It is also the open day of Shanghai Coast Radio Station. On this day, a group of amateur radio operators were invited to visit the transmission facility, a huge antenna farm, of the radio station, located on Chongming Island of Shanghai, the third largest island in China.

Google Satellite Photo

The transmission site of Shanghai Coast Radio Station is as shown below in the map of Chongming Island. Other sites of the station include a central control/receive station in Zhangjiang, a receive station on Hengsha Island and some VHF base stations in a number of other locations. All these locations in Shanghai, linked via cable and microwave connection, form Shanghai Coast Radio Station, also known by its callsign as XSG.

(Google map of transmitter location for Shanghai Coast Radio Station. Note the antenna farm on the left.)

Presentation by Station Officials

Fifteen or so local hams were cordially invited to have a tour of the station. The radio enthusiasts were greeted by station representatives, including Mr Wan, Mr Wang, Mr Zhou and Mr Niu (BH4BFS), who also gave them an overview of the coast radio station’s history and development. 

Antenna Farm

Mr Wang then showed the visitors around the antenna farm. Many of us, myself included, saw and were deeply impressed with these huge antennas for the first time! Indeed, many professional radio facilities and operators of similar coast radio stations work quietly around the globe and around the clock to provide for distress, navigational, business and personal communications needs of ships!

[Click on images to enlarge.]

The antennas cover a wide range of frequencies, from MF, HF, to VHF and UHF. Many of them are, however, shortwave (HF) antennas.

Transmitter Room

(I placed a Tecsun PL-330 radio near the transmitter at 12380.1 kHz (weather fax). The signal strength, in dbu, is 96. Given the margin of error of the receiver’s display, that’s probably as high as it could go.)

Shanghai Coast Radio Station (XSG) operates on a wide range of frequencies. Its HF frequencies include 4207.5, 4209.5, 4215.5, 4369, 6312, 6326, 6501, 8414.5, 8425.5, 8770, 8806, 12577, 12637.5, 13176, 13188, 16804.5, 16898.5 and 17407 kHz. Of particular note is that they have kept a CW frequency of 8665 kHz for general broadcast of information on a 24 hour basis.

The station’s VHF phone service covers 25 nautical miles of the coast. Its MF NAVTEX covers 250 nautical miles of the coast. And its HF phone and weather fax and HF NAVTEX extend to 1,000 nautical miles.

History and Current Status

Founded in 1905, Shanghai Coast Radio Station has been around 119 years. The XSG callsign has since remained in use.

China has in place DSC watch and NAVTEX broadcast in coast stations (including XSG) in accordance with GMDSS requirements. Among services provided by XSG are Radio Telephony (RT), Narrow Band Direct Printing (NBDP), “Voice of the East China Sea Coast” (voice broadcast on 161.600 MHz and 8806 kHz) and marine radio weather fax. The station is without a doubt one of the largest coast radio stations in the Asia Pacific region and plays an essential role in the region’s marine safety and communications.

QSL Cards

Shanghai Coast Radio Station issues QSL cards in Chinese and English, traditionally in paper form and nowadays electronically.

(This is an electronic QSL card issued to a Shanghai listener, who received their signal over the radio. Examples of QSL cards in English can be found online.)

Show Room

[Click on images to enlarge.]

Ham Station

Mr Niu of Shanghai Coast Radio Station, one of the tour’s organisers, is a ham himself with callsign BH4BFS. According to him, there are intentions to start a ham radio station within the establishment, possibly incorporating the letters XSG. However, there is much work to be done to make it happen. An amateur radio station with overlapping callsigns with a professional one would be really charming.

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Skybird returns to the supermarket shelves

FastRadioBurst 23 letting you know of our forthcoming shortwave transmissions this week. On Sunday 2nd June 2024 at 0900/1300 hrs UTC on 6160 kHz and then at 2000 UTC on 6160 kHz and 3975 kHz we bring you the return of Free Radio Skybird beamed to Europe via Shortwave Gold. Tune in and enjoy the return of the station that brings you the eclectic musical treats.

Our second show is KMRT on Wednesday 5th June 2024 at 0200 UTC on 9395 kHz via WRMI. This programme is part of the SOS – Supermarkets on Shortwave 2024 broadcasts. Expect “Blue Light Specials”, a nearing their sell by date cheese and crackers giveaway (*subject to availability and while stocks last) and a heart warming song from our night shift bakery team.  So cut out the coupon of the local paper to save yourself 10% off the broadcast (one coupon only per listener please) and be very suprised what’s on sale in the centre aisle this week. Remember when it’s gone, it’s gone!

For more information on all our shows please email [email protected] and check out our Mixcloud page here.

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