Rádio Nacional da Amazônia: May 12, 2016 from TwenteSDR in the Netherlands

Wideband online SDR receiver at the University of Twente, Enschede, The Netherlands

Following Thomas Witherspoon's excellent recording of the special presidential impeachment coverage on Rádio Nacional da Amazônia, below is another recording of the same transmission as heard via the TwenteSDR online shortwave receiver located in Enschede, The Netherlands. The receiver was tuned to 6180 kHz at 0047 UTC on May 12, 2016. Propagation from the western hemisphere was weak, with heavy static crashes at the start of the recording that subsided towards the middle part. There are several seconds of co-channel QRM from Vatican Radio on 6185 kHz, 1 hour and 22 minutes into the recording, before the passband filter was adjusted to exclude it. A narrow audio filter was used to reduce the risk of subsequent interference from adjacent stations, as the recording was left unattended most of the time. The recording ends when the propagation path becomes completely broken (shortly before 0600 UTC).

Rádio Nacional da Amazônia: May 12, 2016 from TwenteSDR in the Netherlands

London Shortwave

Download

P.S. Although I normally only upload recordings I make with my own equipment and the intelligibility of the above capture leaves a lot to be desired at times, I decided to upload it because of the historical significance of this event (combined with RNA's recent return on 6180 kHz after being out of service on that frequency for more than one year, enabling stable reception in Europe in the early hours of the morning).

AIR National Channel: May 1, 2016

All India Radio's National Channel recorded in London, UK on May 1, 2016 at 1802 UTC, on the frequency of 9380 kHz using AirSpy, SpyVerter, SDR# software and a 2 x 6m long wire dipole antenna. The transmitter has a power rating of 250 kW and is located in Aligarh, Uttar Pradesh, India. 

AIR National Channel: May 1, 2016

London Shortwave

Download

Firedrake Jammer: May 1, 2016

"ACCELERATE SCIENCE AND MODERNISATION" (1978)

Firedrake Jammer on top of Radio Free Asia recorded in London, UK on May 1, 2016 at 1759 UTC, on the frequency of 9965 kHz using AirSpy, SpyVerter, SDR# software and a 2 x 6m long wire dipole antenna. The transmitter power and location are unknown.

Firedrake Jammer: May 1, 2016

London Shortwave

Download

Voice of Vietnam: September 2, 2015

Voice of Vietnam recorded in London, UK on September 2, 2015 at 2030 UTC on the frequency of 9730 kHz using a Lowe HF-150 radio with the Lowe PR-150 preselector, DX Engineering NCC-1 phaser connected to two Wellbrook ALA1530S+ antennas (positioned indoors) to mitigate severe local man-made interference. This was a special broadcast dedicated to the 70th anniversary of Vietnam's declaration of independence.

The transmitter has a power rating of 100 kW and is located in Hanoi, Vietnam. Due to a malfunctioning of the recorder, there were several short gaps in the recording, which were filled in using an earlier (weaker) recording of same broadcast on 7280 kHz at 1900 UTC on the same day. The gaps were as follows:

01:30.619s - 6.415 seconds long
02:08.512s - 1.486 seconds long
02:44.216s - 3.366 seconds long
03:02.060s - 28.847 seconds long

Voice of Vietnam: September 2, 2015

London Shortwave

Download

Voice of Nigeria (DRM): May 29, 2015

Voice of Nigeria in DRM mode recorded in London, UK on May 29, 2015 at 1859 UTC on the frequency of 15120 kHz using a NewStar DR111 radio with the Lowe PR-150 preselector, DX Engineering NCC-1 phaser connected to two Wellbrook ALA1530S+ antennas (positioned indoors) to mitigate severe local man-made interference. The transmitter is located in Abuja, Nigeria and has a power rating of 250 kW. The recording is of the news bulletin announcing the first peaceful transition of power to the new democratically elected president of Nigeria. 

Voice of Nigeria (DRM): May 29, 2015

London Shortwave

Download

Radio Nacional de España: February 25, 2016

Radio Nacional de España 1992 logo

Radio Nacional de España recorded in London, UK on February 25, 2016 at 0600 UTC on the frequency of 585 kHz using a Lowe HF-150 radio with the Lowe PR-150 preselector, DX Engineering NCC-1 phaser connected to two Wellbrook ALA1530S+ antennas (positioned indoors) to mitigate severe local man-made interference. The transmitter is located in Madrid, Spain and has a power rating of 500 kW. This is a local service targeted at the domestic audience.

Radio Nacional de España: February 25, 2016

London Shortwave

Download

Radio Riyadh: April 24, 2016

Radio Riyadh recorded in London, UK on April 24, 2016 at 2100 UTC on the frequency of 9555 kHz using a FunCube Dongle Pro+ SDR, SDR# software, Lowe PR-150 preselector and a DX Engineering NCC-1 phaser connected to two Wellbrook ALA1530S+ antennas (positioned indoors) to mitigate severe local man-made interference. The transmitter has a power rating of 500 kW and is located in Riyadh, Saudi Arabia. The transmission is directed north-westwards (295°) towards the Maghreb region of Africa.

Brief programme summary kindly provided by @K7al_L3afta:

• Start of the recording: News, followed by music
• 22m 00s: a program called "Arabic Aether" that compiles segments from Arabic radio stations
• 51m 15s: the signal is interrupted when the presenter announces the next program's name
• 57m 40s: later, at the end of it, the program's title is repeated: "A Heart's Swing". A romantic Arabic poetry program.
• 60m 00s: Weekly Sunday program called "Najdi Air" or "The Air of Najd" (Najd is a Saudi city). Talk and music show discussing various topics each week and people call to give their opinion and insight. The topic in the recording is "Organising work priorities".

Radio Riyadh: April 24, 2016

London Shortwave

Download

All India Radio (GOS): December 4, 2015

All India Radio's General Overseas Service recorded in London, UK on December 4, 2015 at 2053 UTC on the frequency of 9445 kHz using a Lowe HF-150 radio with the Lowe PR-150 preselector and DX Engineering NCC-1 phaser connected to two Wellbrook ALA1530S+ antennas (positioned indoors) to mitigate severe local man-made interference. Despite these RFI reduction efforts, the initial recording was badly damaged by the noise from several nearby powerline networking adapters (before the correct phasing settings in the NCC-1 unit could be identified, which ultimately nulled this noise) and by degraded propagation towards the end of the transmission. Fortunately, post-processing the recording in SDR# using its noise reduction plugins made the audio listenable once again.

All India Radio (GOS): December 4, 2015

London Shortwave

Download

KBS World Radio (English): April 6, 2016

KBS World Radio recorded in London, UK on April 6, 2016 at 1559 UTC, on the frequency of 9515 kHz using AirSpy, SpyVerter, SDR# software and a 2 x 6m long wire dipole antenna. The transmitter has a power rating of 250 kW and is located in Kimjae, South Korea.

KBS World Radio (English): April 6, 2016

London Shortwave

Download

Voice of Korea: April 9, 2016

Voice of Korea, DPRK recorded in London, UK on April 9, 2016 at 1638 UTC, on the frequency of 11645 kHz using AirSpy, SpyVerter, SDR# software and a 2 x 6m long wire dipole antenna. SDR#'s IF noise reduction plugin was used to mitigate the severe levels of static arising from poor propagation conditions. The transmitter has a power rating of 200 kW and is located in Kujang, DPRK. In this recording, the testing of a new intercontinental ballistic missile component is announced, possibly making this broadcast historically significant. 

Voice of Korea: April 9, 2016

London Shortwave

Download

KCBS Pyongyang: April 9, 2016

Korean Central Broadcasting Station, Pyongyang recorded in London, UK on April 9, 2016 at 1601 UTC, on the frequency of 11680 kHz using AirSpy, SpyVerter, SDR# software and a 2 x 6m long wire dipole antenna. SDR#'s IF noise reduction plugin was used to mitigate the severe levels of static arising from poor propagation conditions. The non-directional transmitter has a power rating of 50 kW and is located in Kanggye, DPRK.

KCBS Pyongyang: April 9, 2016

London Shortwave

Download

The Sound of Hope: April 6, 2016

The Sound of Hope (Xi Wang Zhi Sheng) recorded in London, UK on April 6, 2016 at 1600 UTC, on the frequency of 9155 kHz using AirSpy, SpyVerter, SDR# software and a 2 x 6m long wire dipole antenna. The transmitter has a power rating of 100W and is located in Taiwan. This transmission is usually a difficult catch in Europe due to its low power rating and non-directional nature. SDR#'s IF noise reduction plugin was used to make speech more intelligible.

The Sound of Hope: April 6, 2016

London Shortwave

Download

AIR National Channel: September 15, 2015

All India Radio's National Channel recorded in London, UK on September 15, 2015 at 1652 UTC, on the frequency of 9380 kHz using SDRPlay with SDR# software and a 2 x 6m long wire dipole. The transmitter has a power rating of 250 kW and is located in Aligarh, Uttar Pradesh, India. This is an interesting catch in Europe, as the transmission is directed southwards.

AIR National Channel: September 15, 2015

London Shortwave

Download

Radio Belarus (German): September 24, 2015

Radio Belarus recorded in London, UK on September 24, 2015 at 1800 UTC, on the frequency of 11730 kHz using SDRPlay with SDR# software and a 2 x 6m long wire dipole. The transmitter has a power rating of 150 kW and is located in Minsk, Belarus. The characteristic hum from the transmitter was removed using Vasili Beliakov's SDR# IF processor plugin.

Radio Belarus (German): September 24, 2015

London Shortwave

Download

Radio Belarus (Russian): March 31, 2016

Radio Belarus in Russian recorded outdoors in London, UK on March 31, 2016 at 1439 UTC, on the frequency of 11730 kHz using a Tecsun PL-680 radio and the supplied external antenna. The transmitter has a power rating of 150 kW and is located in Minsk, Belarus. The characteristic hum and low modulation typical of Radio Belarus are present in this recording.

Radio Belarus (Russian): March 31, 2016

London Shortwave

Download

Radio Belarus (Belorussian): March 31, 2016

Radio Belarus in Belorussian recorded outdoors in London, UK on March 31, 2016 at 1256 UTC, on the frequency of 11730 kHz using a Tecsun PL-680 radio and the supplied external antenna. The transmitter has a power rating of 150 kW and is located in Minsk, Belarus. The characteristic hum and low modulation typical of Radio Belarus are present in this recording. At 1330 UTC, BBC Bangla started broadcasting on the same frequency.

Radio Belarus (Belorussian): March 31, 2016

London Shortwave

Download

Antena Satelor: February 25, 2016

Antena Satelor, Romania recorded in London, UK on February 25, 2016 at 0143 UTC on the frequency of 153 kHz using a Lowe HF-150 radio with the Lowe PR-150 preselector, DX Engineering NCC-1 phaser connected to two Wellbrook ALA1530S+ antennas (positioned indoors) to mitigate severe local man-made interference. The transmitter is located in Brașov, Romania and has a power rating of 200 kW. This is a local service targeted at the domestic audience. At about 0530 UTC (0730 local time in Brașov; 3 hours 46 minutes into the recording) the night-time skywave propagation path is finally completely disrupted by the sunlight reaching into Romania (26 minutes after sunrise).

Antena Satelor: February 25, 2016

London Shortwave

Download

Voice of Turkey: February 18, 2016

Voice of Turkey recorded in London, UK on February 18, 2016 at 0900 UTC, on the frequency of 15350 kHz using a Lowe HF-150 radio with Lowe PR-150 preselector and a Wellbrook ALA1530S+ antenna. The transmitter is located in Emirler, Turkey and has a power rating of 500 kW.

Voice of Turkey: February 18, 2016

London Shortwave

Download

Voice of Indonesia (Spanish): February 13, 2016

Voice of Indonesia recorded outdoors in London, UK on February 13, 2016 at 1700 UTC, on the frequency of 9525 kHz using a Tecsun PL-680 radio and the supplied external antenna. The transmitter has a power rating of 250 kW and is located in Jakarta, Indonesia.

Voice of Indonesia (Spanish): February 13, 2016

London Shortwave

Download

Radio Denge Kurdistane: September 24, 2015

Radio Denge Kurdistane recorded in London, UK on September 24, 2015 at 1652 UTC, on the frequency of 11600 kHz using SDRPlay with SDR# software and a 2 x 6m long wire dipole. At the start of the recording, the transmission originates from Kostinbrod, Bulgaria. At 1700 UTC that transmission closes, and recommences on the same frequency from Issoudun, France.

Radio Denge Kurdistane: September 24, 2015

London Shortwave

Download