Tag Archives: Radiograms

VOA Radiogram this weekend

VOARadioGram(Source: VOA Radiogram)

Some listeners were impressed with the performance of last weekend’s surprise mode: MT63-1000 long interleave, especially as it was mixed with music. For that reason, VOA Radiogram for the weekend of 20-21 July will include a VOA News story in the MT63-2000L mode (200 wpm), followed by the same story in the MFSK64 mode (240 wpm).

Here is the lineup for VOA Radiogram, 20-21 July 2013:

2:20  MFSK16: Program preview

4:31  MFSK16: VOA News about quartz glass for data storage

2:04  MFSK32: Image of data stored in silica glass

3:59  MFSK32: VOA News about end of India’s telegram service

2:42  MFSK32: Image of sign at telegram office

2:53  MT63-2000L: VOA News about new materials for solar cells

2:32  MFSK64: Same VOA News about new materials for solar cells

1:10  MFSK32: Image of molecularspace.org logo

1:08  MFSK16: Closing announcements

1:11  Surprise image

The audio processor will not be used this weekend.

Please send reception reports to  [email protected].

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Radio Australia transmitting digital radiograms this weekend, June 8 – 9


Most encouraging to see Radio Australia sending digital text over shortwave. Their 12:30 UTC broadcast should be easily heard in North America on 9,850 kHz:

(Source: VOA Radiograms)

Radio Australia will transmit digital text and an image during three special broadcasts the weekend of 8 and 9 June 2013.

The seven-minute broadcasts will consist of…

MFSK16 text
MFSK32 text
MFSK32 in Flmsg* format (creates Radio Australia logo in browser window)
MFSK32 image (ABC logo)

*Fldigi and Flmsg from www.w1hkj.com must be used together. In Fldigi, click Configure > Misc > NBEMS: Under Reception of flmsg files, check both boxes, and under that indicate where your Flmsg program file is located.

Transmission schedule

All dates/times are in UTC, all frequencies in kHz

Saturday/Sunday 8/9 June 2013

Nominal target areas are listed. Reception beyond these target areas is likely.

0850-0857 UTC

  •  7410 kHz (PNG & south-west Pacific)  
  • 11945 kHz (south Pacific, NZ, central America, Europe)

1230-1237 UTC

  •  6080 kHz (PNG, west Pacific, Philippines, Japan)
  •  9580 kHz (central Pacific, NAM)  
  • 12065 kHz (central Pacific, NAM)

2150-2157 UT C

  • 11695 kHz (south-east Asia, Europe) 
  • 21740 kHz (central Pacific, NAm) 

Each broadcast begins with with 40 seconds of Radio Australia interval signal (Waltzing Matilda).

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VOA, Mighty KBC and PCJ: Radiograms this weekend

The Mighty KBC, the VOA and PCJ radio will broadcast radiograms (digital text) over shortwave radio this weekend.

Reception conditions could be challenging depending on the impact of the incoming CME (Coronal Mass Ejection) which is expected to disrupt the high frequency bands today. All the more reason to attempt to decode these messages as Dr. Kim Elliott is studying each digital mode and its ability to effectively overcome adverse conditions. Email your reports and audio files to: [email protected]

Here are details from each broadcaster:

KBCradioThe Mighty KBC

Broadcasting 14 April 2013 from 00:00-02:00 UTC on 7,375 kHz.

At about 0133 UTC, two slow (less than 60 WPM) but robust modes will be transmitted: Olivia 8-1000 centered on 1000 Hertz, and MFSK16 on 2000 Hertz.

At just before 0200 UTC, Olivia 8-2000, with Flmsg format, will be centered on 1500 Hertz.

VOARadioGramThe Voice of America

VOA Radiogram for the weekend of 13/14 April 2013 will feature the Olivia modes, with MFSK modes also transmitted for comparison.

The modes will be transmitted in groups of three, and all will be centered on an audio frequency of 1500 Hertz, except where indicated:

Olivia 8-1000, 58 WPM, 1:32 (program menu)
MFSK 16,  58 WPM, 1:52
Olivia 8-1000, 58 WPM, 1:44

Olivia 32-2000, 50 WPM, 2:09
MFSK 22, 80 WPM, 1:50
Olivia 16-2000, 80 WPM, 1:51

MFSK 32, 120WPM, 2:04
Olivia 8-2000, 120WPM, 2:04
Olivia 4-2000, 160WPM, 1:40

Olivia 16-1000 (centered on 2000 Hz) versus music, 2:03

MFSK 32 closing text and image,  :51

Reception reports with (if possible) sample audio and screenshots would be appreciated. Audio files from outside the United States are especially helpful.

[email protected]

Twitter: @VOARadiogram

Here is the VOA Radiogram broadcast schedule:
(all days and times UTC)
Sat 1600-1630 17860 kHz
Sun 0230-0300 5745 kHz
Sun 1300-1330 6095 kHz
Sun 1930-2000 15670 kHz
All via the Edward R. Murrow transmitting station in North Carolina.

pcjPCJ Radio

PCJ Radio will transmit text on 14 April 2013 at 02:27 UTC via WRMI, Radio Miami International on 9,955 kHz. The mode will be Olivia 8-1000.

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PCJ Radio International radiogram, March 31st


(Source: PCJ Media)

On March 31st, 2013 PCJ Radio International will conduct a digital text through analogue shortwave broadcast of a radiogram.

Setting: MFSK32

Date: March 31, 2013

Time: 0227UTC

Frequency: 9955khz

This test will have a message in English and Spanish for listeners in Cuba and Latin America. Those in the South Eastern part of the United States will also be able to tune in and record the 2 to 3 min transmission. If all goes as planed the Cuban jamming against 9955 kHz won’t have any effect on the message we will transmit.

For information on the software needed to decode this radiogram visit the following URL:


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