STANAG 4285

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STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 4285
STANAG 4285.jpg
Frequencies 1.89 MHzMegaHertz (MHz) 10^6 Hz1,890,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,890 kHzKiloHertz (kHz) 10^3 Hz
,22.7 MHzMegaHertz (MHz) 10^6 Hz22,700,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
22,700 kHzKiloHertz (kHz) 10^3 Hz
1,890 kHzKiloHertz (kHz) 10^3 Hz
1.89 MHzMegaHertz (MHz) 10^6 Hz
22,700 kHzKiloHertz (kHz) 10^3 Hz
22.7 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 1.89 MHzMegaHertz (MHz) 10^6 Hz1,890,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,890 kHzKiloHertz (kHz) 10^3 Hz
- 22.7 MHzMegaHertz (MHz) 10^6 Hz22,700,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
22,700 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 PSKPhase-Shift Keying
ACFAutoCorrelation Function 106.66 msmilliseconds (.001 of a second)
Bandwidth 2750 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).2.75 kHzKiloHertz (kHz) 10^3 Hz
0.00275 MHzMegaHertz (MHz) 10^6 Hz
2.75 kHzKiloHertz (kHz) 10^3 Hz
0.00275 MHzMegaHertz (MHz) 10^6 Hz
2.75 kHzKiloHertz (kHz) 10^3 Hz
0.00275 MHzMegaHertz (MHz) 10^6 Hz
Location Worldwide
Short Description STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 4285 is specified by the NATONorth Atlantic Treaty Organization (North Atlantic Treaty Organization) Military Agency for Standardization in "Characteristics of 1200 / 2400 / 3600 Bits per Second Single Tone Modulators / Demodulators for HFHigh Frequency (3-30 MHz) Radio Links"
I/Q Raw Recording
Audio Sample
STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 4285 is specified by the NATONorth Atlantic Treaty Organization (North Atlantic Treaty Organization) Military Agency for Standardization in "Characteristics of 1200 / 2400 / 3600 Bits per Second Single Tone Modulators / Demodulators for HFHigh Frequency (3-30 MHz) Radio Links". This data modem is very similar to MIL-STD-188-110 Serial.


Characteristics[edit]

STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 4285 has a variety of speeds and interleaving. Speeds range from 75 bpsBits per second (bps) up to 3600 bpsBits per second (bps). Two interleaving modes exist: Short and Long. Short interleaving allows for faster transmission at the cost of less robustness against effects of fading. Long interleaving extends the interleaving period so that messages take longer to send, but are more robust against fading from propagation effects.

BPSKBinary Phase-Shift Keying (1 bit per symbol), QPSKQuadrature Phase-Shift Keying (2 bits per symbol), and 8PSK8-Phase Phase-Shift Keying (3 bits per symbol) are used with STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 4285 for specific speeds.


Modulation Modes of STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 4285
Symbol Rate
(baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.)
User Data
Rate (bpsBits per second (bps))
Bits per Symbol
(Modulation)
FECForward Error Correction Encoding
Rate
Supported
Interleaving
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 2400 bpsBits per second (bps) 3 (8-PSK8-Phase Phase-Shift Keying (3 bits per symbol)) 2/3 Short or Long
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 1200 bpsBits per second (bps) 2 (QPSKQuadrature Phase-Shift Keying (2 bits per symbol)) 1/2 Short or Long
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 600 bpsBits per second (bps) 1 (BPSKBinary Phase-Shift Keying (1 bit per symbol)) 1/2 Short or Long
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 300 bpsBits per second (bps) 1 (BPSKBinary Phase-Shift Keying (1 bit per symbol)) 1/4 Short or Long
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 150 bpsBits per second (bps) 1 (BPSKBinary Phase-Shift Keying (1 bit per symbol)) 1/8 Short or Long
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 75 bpsBits per second (bps) 1 (BPSKBinary Phase-Shift Keying (1 bit per symbol)) 1/16 Short or Long
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 3600 bpsBits per second (bps) 3 (8-PSK8-Phase Phase-Shift Keying (3 bits per symbol)) None None
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 2400 bpsBits per second (bps) 2 (QPSKQuadrature Phase-Shift Keying (2 bits per symbol)) None None
2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. 1200 bpsBits per second (bps) 1 (BPSKBinary Phase-Shift Keying (1 bit per symbol)) None None


There are also variants of 4285, including one used in Thales Système 3000 HF Modems (e.g TRC-1752). The unique identifier of these is the existence of a special preamble at the beginning of the transmission.

Samples[edit]

IDLE TFC 8-PSK8-Phase Phase-Shift Keying (3 bits per symbol)
4285 IDLE.jpg
STANAG 4285.jpg
8PSK Stanag.jpg
Thales Système
3000 Variant
Thales Système
3000 FECForward Error Correction Variant
French diplo stanag 4285 var.jpg
Stanag Thales FEC variant.jpg

Frequencies[edit]

Found on many HFHigh Frequency (3-30 MHz) frequencies between 1.89 MHzMegaHertz (MHz) 10^6 Hz to 22.7 MHzMegaHertz (MHz) 10^6 Hz. Full observed frequency list can be found at Global Tuners

Decoding Software[edit]

Hobby Level Software


Professional Equipment/Software

Video Examples[edit]

Additional Links[edit]

Additional Images[edit]