Radio Teletype (RTTY)

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Radio Teletype (RTTYRadio TeleTYpe)
RTTY thumbnail.jpg
Frequencies 147.3 KHzKiloHertz (kHz) 10^3 Hz147,300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.147 MHzMegaHertz (MHz) 10^6 Hz
,3570 KHzKiloHertz (kHz) 10^3 Hz3,570,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3.57 MHzMegaHertz (MHz) 10^6 Hz
,4583 kHzKiloHertz (kHz) 10^3 Hz4,583,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
4.583 MHzMegaHertz (MHz) 10^6 Hz
,5330.5 KHzKiloHertz (kHz) 10^3 Hz5,330,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
5.331 MHzMegaHertz (MHz) 10^6 Hz
,5346.5KHz5,346,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
5.347 MHzMegaHertz (MHz) 10^6 Hz
,5357.0 KHzKiloHertz (kHz) 10^3 Hz5,357,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
5.357 MHzMegaHertz (MHz) 10^6 Hz
,5371.5 KHzKiloHertz (kHz) 10^3 Hz5,371,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
5.372 MHzMegaHertz (MHz) 10^6 Hz
,5403.5 KHzKiloHertz (kHz) 10^3 Hz5,403,500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
5.404 MHzMegaHertz (MHz) 10^6 Hz
,7040 KHzKiloHertz (kHz) 10^3 Hz7,040,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
7.04 MHzMegaHertz (MHz) 10^6 Hz
,7080 KHzKiloHertz (kHz) 10^3 Hz7,080,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
7.08 MHzMegaHertz (MHz) 10^6 Hz
,7125 KHzKiloHertz (kHz) 10^3 Hz7,125,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
7.125 MHzMegaHertz (MHz) 10^6 Hz
,7646 kHzKiloHertz (kHz) 10^3 Hz7,646,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
7.646 MHzMegaHertz (MHz) 10^6 Hz
,10.1008 MHzMegaHertz (MHz) 10^6 Hz10,100,800 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
10,100.8 kHzKiloHertz (kHz) 10^3 Hz
,10.130 MHzMegaHertz (MHz) 10^6 Hz10,130,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
10,130 kHzKiloHertz (kHz) 10^3 Hz
,11.039 MHzMegaHertz (MHz) 10^6 Hz11,039,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
11,039 kHzKiloHertz (kHz) 10^3 Hz
,14.070 MHzMegaHertz (MHz) 10^6 Hz14,070,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
14,070 kHzKiloHertz (kHz) 10^3 Hz
,14.4673 MHzMegaHertz (MHz) 10^6 Hz14,467,300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
14,467.3 kHzKiloHertz (kHz) 10^3 Hz
,28.150 MHzMegaHertz (MHz) 10^6 Hz28,150,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
28,150 kHzKiloHertz (kHz) 10^3 Hz
147.3 kHzKiloHertz (kHz) 10^3 Hz
0.147 MHzMegaHertz (MHz) 10^6 Hz
28,150 kHzKiloHertz (kHz) 10^3 Hz
28.15 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 147.3 kHzKiloHertz (kHz) 10^3 Hz147,300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.147 MHzMegaHertz (MHz) 10^6 Hz
- 28.15 MHzMegaHertz (MHz) 10^6 Hz28,150,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
28,150 kHzKiloHertz (kHz) 10^3 Hz
Mode USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables)
Modulation FSKFrequency-Shift Keying
ACFAutoCorrelation Function
Bandwidth 85Hz0.085 kHzKiloHertz (kHz) 10^3 Hz
8.5e-5 MHzMegaHertz (MHz) 10^6 Hz
,170Hz0.17 kHzKiloHertz (kHz) 10^3 Hz
1.7e-4 MHzMegaHertz (MHz) 10^6 Hz
,450Hz0.45 kHzKiloHertz (kHz) 10^3 Hz
4.5e-4 MHzMegaHertz (MHz) 10^6 Hz
,850Hz0.85 kHzKiloHertz (kHz) 10^3 Hz
8.5e-4 MHzMegaHertz (MHz) 10^6 Hz
0.085 kHzKiloHertz (kHz) 10^3 Hz
8.5e-5 MHzMegaHertz (MHz) 10^6 Hz
0.85 kHzKiloHertz (kHz) 10^3 Hz
8.5e-4 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description RTTYRadio TeleTYpe (Also known as Baudot or ITA2) uses the Baudot 5-bit alphabet with FSKFrequency-Shift Keying to send text messages over the shortwave. This mode is gradually dying out in favor of more robust modes like PSK31 in the amateur service.
I/Q Raw Recording
Audio Sample
RTTYRadio TeleTYpe (Also known as Baudot or ITA2) uses the Baudot 5-bit alphabet with FSKFrequency-Shift Keying to send text messages over the shortwave. This mode is gradually dying out in favor of more robust modes like PSK31 in the amateur service. Uses the ITA-2 alphabet (Commonly known as Baudot, derived from the Murray code). Apart from occasional ham use, the only other known user is the Deutscher Wetterdienst (German Meteorological Service).


There are many modes that sound like Baudot, but in fact aren't. For example, the Russians use a 50 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. /200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). system that to the ear, sounds like Baudot. Closer examination with tools for viewing waveforms and other data will show this clearly.

Among amateur radio, the most common default mode of RTTYRadio TeleTYpe is 170 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). with 45.45Bd.


Click Here to Hear Pinneberg RTTY Live at WebSDR Univ. of Twente[edit]

Samples[edit]

RTTYRadio TeleTYpe 85Hz Shift
45.45 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 85Hz 45.45Bd.jpg
50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 85Hz 50Bd.jpg
75 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 85Hz 75Bd.jpg
100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 85Hz 100Bd.jpg


RTTYRadio TeleTYpe 170Hz Shift

45.45 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 170Hz 45.45bd.jpg
50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 170Hz 50Bd.jpg
75 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 170Hz 75Bd.jpg
100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 170Hz 100Bd.jpg


RTTYRadio TeleTYpe 450Hz Shift

45.45 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 450Hz 45.45Bd.jpg
50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 450Hz 50Bd.jpg
75 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 450Hz 75Bd.jpg
100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 450Hz 100Bd.jpg


RTTYRadio TeleTYpe 850Hz Shift

45.45 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 850Hz 45.45Bd.jpg
50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 850Hz 50Bd.jpg
75 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 850Hz 75Bd.jpg
100 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.

RTTY 850Hz 100Bd.jpg

Frequencies[edit]

Pinneberg DWD Weather RTTYRadio TeleTYpe[edit]

 Frequency   Callsign   Broadcast Times   Tx Power   BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.   Shift 
147.3 kHzKiloHertz (kHz) 10^3 Hz DDH 47 05.30 - 22.00 UTC 20 kW 50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 85 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
11039 kHzKiloHertz (kHz) 10^3 Hz DDH 9 05.30 - 22.00 UTC 1 kW 50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
14467.3 kHzKiloHertz (kHz) 10^3 Hz DDH 8 05.30 - 22.00 UTC 1 kW 50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
4583 kHzKiloHertz (kHz) 10^3 Hz DDK 2 00.00 - 24.00 UTC 1 kW 50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
7646 kHzKiloHertz (kHz) 10^3 Hz DDH 7 00.00 - 24.00 UTC 1 kW 50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
10100.8 kHzKiloHertz (kHz) 10^3 Hz DDK 9 00.00 - 24.00 UTC 10 kW 50 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).

Amateur Radio[edit]

Amateur RTTYRadio TeleTYpe radio bands can be found here.

Decoding Software[edit]

Hobby Level Software


Professional Equipment/Software

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]