STANAG 4481

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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). 4481
STANAG 4481.jpg
Frequencies 2.815 MHzMegaHertz (MHz) 10^6 Hz2,815,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
2,815 kHzKiloHertz (kHz) 10^3 Hz
,3.046 MHzMegaHertz (MHz) 10^6 Hz3,046,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
3,046 kHzKiloHertz (kHz) 10^3 Hz
,8.986 MHzMegaHertz (MHz) 10^6 Hz8,986,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
8,986 kHzKiloHertz (kHz) 10^3 Hz
,11.213 MHzMegaHertz (MHz) 10^6 Hz11,213,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
11,213 kHzKiloHertz (kHz) 10^3 Hz
,18.016 MHzMegaHertz (MHz) 10^6 Hz18,016,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
18,016 kHzKiloHertz (kHz) 10^3 Hz
2,815 kHzKiloHertz (kHz) 10^3 Hz
2.815 MHzMegaHertz (MHz) 10^6 Hz
18,016 kHzKiloHertz (kHz) 10^3 Hz
18.016 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 2.815 MHzMegaHertz (MHz) 10^6 Hz2,815,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
2,815 kHzKiloHertz (kHz) 10^3 Hz
- 18.016 MHzMegaHertz (MHz) 10^6 Hz18,016,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
18,016 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,PSKPhase-Shift Keying
ACF
Bandwidth 1500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).1.5 kHzKiloHertz (kHz) 10^3 Hz
0.0015 MHzMegaHertz (MHz) 10^6 Hz
,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
1.5 kHzKiloHertz (kHz) 10^3 Hz
0.0015 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). 4481, also known as CRATT, Link-4, and NATONorth Atlantic Treaty Organization-75, is specified by the NATONorth Atlantic Treaty Organization (North Atlantic Treaty Organization) Military Agency for Standardization as a "Minimum technical equipment standards for naval HFHigh Frequency (3-30 MHz) shore-to-ship broadcast system"
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). 4481, also known as CRATT, Link-4, and NATONorth Atlantic Treaty Organization-75, is specified by the NATONorth Atlantic Treaty Organization (North Atlantic Treaty Organization) Military Agency for Standardization as a "Minimum technical equipment standards for naval HFHigh Frequency (3-30 MHz) shore-to-ship broadcast system"


Modes[edit]

4481 FSKFrequency-Shift Keying: Synchronous FSKFrequency-Shift Keying mode, which uses KG-84 encryption for communication. It is commonly found in the HFHigh Frequency (3-30 MHz) band. A number of communication parameter settings are possible, but 75 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. and a shift of 850 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). are widely used. BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rates include 75, 100, 150, 300, and 600 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second..

4481 PSKPhase-Shift Keying: This utilizes binary phase shift keying (BPSKBinary Phase-Shift Keying (1 bit per symbol)) of a single tone 1800 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). sub-carrier with a constant modulation speed of 2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. Through the use of BPSKBinary Phase-Shift Keying (1 bit per symbol) modulation and a FECForward Error Correction coding rate of 1/4, the effective user data rate is 300 bpsBits per second (bps). Take note that this mode looks and sounds almost identical to STANAG 4285, since both have a 3000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). Bandwidth with 2400 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. symbol rate.

Samples[edit]

FSKFrequency-Shift Keying[edit]

Sample 1:

Sample 2:

PSKPhase-Shift Keying[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). 4481 PSKPhase-Shift Keying
STANAG 4481 PSK.jpg

Decoding Software[edit]

Hobby Level Software


Professional Equipment/Software

Video Examples[edit]


Additional Links[edit]

Additional Images[edit]