Category Archives: Shortwave Radio

Hackaday Spotlights a Clever DIY Si5351 Radio Project

Many thanks to SWLing Post contributor Dennis Dura who notes that Hackaday recently featured a clever DIY receiver project based on the Si5351 and ESP32 that covers shortwave, mediumwave, and more. It has a nice retro look, plenty of modern features, and even includes an SDR mode for use with a computer.

If you enjoy homebrew radio projects, this is well worth a look:

DIY SI5351 Radio Tunes In SW, MW, And More

Carlos’ Illustrated Radio Listening Report and Recording of CGTN (June 29, 2026)

Many thanks to SWLing Post contributor and noted political cartoonist, Carlos Latuff, who shares the following illustrated radio listening report of a recent CGTN broadcast.


Carlos notes:

November cyclone damage fuels Sri Lanka dengue surge, CGTN Radio, 11770 kHz

In general, when we think about climate change and its consequences, high temperatures, rainfall, and floods come to mind. However, a report released by CGTN radio on June 29 highlights a different aspect. According to Sri Lankan health authorities, the devastation caused by Cyclone Ditwah—which battered the island in November 2025—created conditions that fostered the proliferation of dengue-carrying mosquitoes, resulting in an outbreak of the disease.

Click here to view on YouTube.

Radio Nacional da Amazônia Announces Temporary Shortwave Schedule Changes

Many thanks to SWLing Post contributor, Paul Walker, who shares the following:

The shortwave transmitter site NW of Brasilia, operated by the national public broadcaster Empresa Brasil de Comunicacao for the Radio Nacional de Amazonia service, has had to make a change to its SW operating schedule.

EBC’s Radio Engineering Manager Manoel Caetano tells me, “Due to technical problems and energy costs, the Radio Nacional de Amazonias service will have reduced operating hours through at least the end of the year”

11780kHz will operate weekdays from 0745UTC to 2000UTC and 6180kHz will operate weekdays from 2000 to 0300UTC.

On weekends, 11780kHz will operate from 0900UTC to 1800UTC, while the 6180kHz frequency will remain off-air.

Do you want jam on it?

Hi to all SWLing Post community. Here’s what Imaginary Stations will be bringing to the shortwaves this week.

On Wednesday 1st July 2026, at 0200 hrs UTC on 9395 kHz on WRMI we have WHFM – Herman’s Radio and Record Room. This is a further show in a series of programmes recorded by DJ Frederick Moe in memory of his father Herman (1919-2001) and features mid-century sounds including country, jazz, folk and easy listening.

Later on that day at at 2000 hrs UTC on 3975 kHz/6160 kHz via Shortwave Gold, we bring you the repeat of Skybird Jams. The show is entitled “Music to increase your attention span” with DJ Frederick, in other words, extended tunes and ‘jam bands’ on your shortwave dial. Tune in and enjoy the sound of Skybird Jams.

While on Saturday 4th July at 1100 hrs UTC on 6160 kHz and then again on Sunday 5th July at 1300 hrs UTC on 6160 kHz and 2000 hrs UTC on 3975 kHz/6160 kHz, we have the first episode of the show called Wave. Think beach, think sea, think surf and all things summery! And think of those shortwaves too.

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

FastRadioBurst23

Carlos tests a Panasonic RN-305 Microcassette Recorder

Many thanks to SWLing Post contributor Carlos Latuff, who shares the following article. Carlos writes:

Panasonic Microcassette Recorder

To record my radio listening sessions, I usually use a Sony digital recorder, model ICD-PX240. However, last week I purchased another beauty—this time a Panasonic microcassette recorder, model RN-305, manufactured in Japan in 2000.

I decided to test it out, and here are the results. The listening sessions were conducted in Porto Alegre using XHDATA D808 and Ecopower EP-F23B receivers.

Audio:

Click here to download.

Notes:

June 25, 2026

NHK, 11800 kHz (in Japanese)

7.2 quake hits Aomori and Iwate prefectures. Typhoon No.7 approaching Okinawa, No. 8 approaching Izu Islands.

BBC, 15400 kHz (in English)

Earthquake in Venezuela, Spain and France offering rescue workers.
US Secretary of State assured Gulf allies the Strait of Hormuz will stay open as Iran threatens transit fees.
Former Israeli leaders threatened legal action over alleged Jewish terrorism in the occupied West Bank.

June 26, 2026

BBC, 15400 kHz (in English)

Earthquake in Venezuela, more than 900 people are now known to have died in two earthquakes. The U. N. says 50,000 people are missing.
The U.S. announced a framework to end fighting between Israel and Hezbollah in Lebanon.
John Bolton pleaded guilty to one charge of mishandling information.
A state of emergency was declared in Crimea.
Extreme heatwave in Europe, Germany recorded temperatures above 41°C on Friday, in France, festivals, street parties and Paris Pride were canceled, while alcohol sales were restricted in Paris, in the Netherlands, electric bus charging failures disrupted public transport.
Paris suspended flights to and from Kinshasa, D.R. Congo, after a passenger tested positive for Ebola.
Civil unrest in Tanzania.
D.R. Congo sued Rwanda at the International Court of Justice over alleged atrocities.
Earthquake in Venezuela: Full coverage.
Lebanon and Israel reached a U.S.-brokered deal for Israel’s withdrawal from southern Lebanon.

Radio Exterior de España, 17715 kHz (in Arabic)

Venezuela was struck by two earthquakes of magnitude 7.2 and 7.3 according to the U.S. Geological Survey on Wednesday. Collapsed buildings and several damaged structures were observed in the capital, Caracas. Acting President Delcy Rodriguez reported in an initial tally that the two earthquakes resulted in 32 deaths and 700 injuries. State of emergency was declared after the two earthquakes, which were followed by approximately 20 aftershocks. The earthquakes caused further damage, including building collapses and the closure of Simón Bolívar International Airport. The state of La Guaira was the most affected and was declared a disaster area, as explained by Acting President Delcy Rodriguez.

Vatican Radio, 11870 kHz (in English)

Africa News Panorama: Ebola outbreak in D.R. Congo, more that 1100 cases with 300 deaths.
Anti-immigrant rallies in South Africa.
Rescue workers are working in the rubble of a three-story building that collapsed in Nigeria.

Radio 2, 1230 kHz AM (in Spanish)

Venezuela increased to 920 the dead and there are at least 3360 injured in the latest reports of the Ministry of Health after the earthquakes of Wednesday. In addition to 50.000 people who remain missing.

More jamming on shortwave

Hi to all SWLing Post community. Here’s what Imaginary Stations will be bringing to the ionosphere this week.

On Wednesday June 24th at 2000 hrs UTC on 3975 kHz/6160 kHz via Shortwave Gold, we bring you Skybird Jams. The show is entitled “Music to increase your attention span” with DJ Frederick, in other words, extended tunes and ‘jam bands’ on your shortwave dial. Tune in and enjoy the sound of Skybird Jams.

While on Saturday 27th June at 1100 hrs UTC on 6160 kHz and then again on Sunday 28th June at 1300 hrs UTC on 6160 kHz and 2000 hrs UTC on 3975 kHz/6160 kHz we have WMMR (Mystery Mix Radio) where we have a theme that you, the listener tries to guess what it is from the tunes played. There will be no clues apart from the music.

On Wednesday 1st July 2026, at 0200 hrs UTC on 9395 kHz on WRMI we have WHFM – Herman’s Radio and Record Room. This is another show in a series of programmes recorded by DJ Frederick Moe in memory of his father Herman (1919-2001) and features mid-century sounds including country, jazz, folk and easy listening.

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

FastRadioBurst23

Recordings: VOA Chinese and Possible Co-Channel QRM

Many thanks to SWLing Post contributor, Dan Greenall, who writes:

The Voice of America is currently using its Tinang, Philippines site for a broadcast in Chinese beginning at 2100 UTC on 9535 kHz.

Here are 2 recordings of their sign-on with English ID and Yankee Doodle, one using a Kiwi SDR in Athens, Greece, and another using a Kiwi SDR in Taiwan (closer to the target area).

Athens, Greece

Taiwan

The signal starts out OK around 2157 with a test tone prior to Yankee Doodle, but seems to suffer from QRM from a co-channel station signing on after a minute or so. CRI is listed as using 9535 at other times, but perhaps this is a deliberate attempt to make the reception of VOA “uncomfortable”?