From HFUnderground
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| | [[File:AM_SWBC_7520.jpg|200px]] | | | [[File:AM_SWBC_7520.jpg|200px]] |
| |- | | |- |
- | | [[CW]] (Morse Code) | + | | [[CW]] |
| + | (Morse Code) |
| | All Frequencies in the HF Range | | | All Frequencies in the HF Range |
| | Very narrow, potentially less than 50 Hz | | | Very narrow, potentially less than 50 Hz |
Revision as of 16:16, 2 December 2014
Crude mock-up of the start of a signal identification section of the wiki.
Guidelines, goals, structure, and how to use described here.
Non Communications Modes
Mode
| Frequency Range (kHz)
| Bandwidth (kHz)
| Shift (Hz)
| Number of Tones
| Key Features
| Sources
| Recording
| Spectrum Image
|
16 x 64 Sounder (nickname, official name or designation not known)
| Below 4000 to above 30000 observed
| 3 kHz
| Not Applicable
| Not Applicable
| FMCW transmission, changes sweep rates in 16 steps, resulting in 16 different sounds per transmission, pilot tone precedes each rate change
| Unknown
| 16 x 64 sounder recording link here
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|
PLUTO radar (possible offical name, PLUTO II, suggested by open source documents)
| 8000 to 38000
| 3 to 40 kHz, depending on specific operating conditions
| Not Applicable
| Not Applicable
| FMCW transmission, presenting a wide signal equal to the swept (chirped) width, sweep rate creates a pulsed sound affect
| British Sovereing base of Akrotiri, Island of Cyprus
| PLUTO recording link here
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Need to put some kind of break here, a line or something, to sep out the Non DATA from DATA
Probably need to put a desription of what is meant by DATA Signals in this area.
FSK Modes
Mode
| Frequency Range (kHz)
| Bandwidth (kHz)
| Shift (Hz)
| Number of Tones
| Key Features
| Sources
| Recording
| Spectrum Image
|
CIS 36-50, BEE, T-600
| All Frequencies in the HF Range
| 0.085 to 0.500 kHz (85 to 500 Hz depending on mode)
| 85, 125, 250, or 500, only one shift used at a time
| 2
| Appears as two lines on waterfall, seperated by the shift, normally encrypted
| Used by Russian or Russian supplied forces, a mode of the T-600 modem
| CIS 36-50 recording link here
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|
STANAG 4481 FSK
| All Frequencies in the HF Range
| 0.85 kHz (850 Hz)
| 850 Hz
| 2
| Appears as two lines on waterfall, seperated by the shift, normally encrypted
| Used by NATO forces world wide
| 4481 FSK recording link here
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MFSK Modes
Mode
| Frequency Range (kHz)
| Bandwidth (kHz)
| Shift (Hz)
| Number of Tones
| Key Features
| Sources
| Recording
| Spectrum Image
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|
PSK Modes
Mode
| Frequency Range (kHz)
| Bandwidth (kHz)
| Shift (Hz)
| Number of Tones
| Key Features
| Sources
| Recording
| Spectrum Image
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|
SELCAL Modes
Mode
| Frequency Range (kHz)
| Bandwidth (kHz)
| Shift (Hz)
| Number of Tones
| Key Features
| Sources
| Recording
| Spectrum Image
|
|
Image Modes
Mode
| Frequency Range (kHz)
| Bandwidth (kHz)
| Shift (Hz)
| Number of Tones
| Key Features
| Sources
| Recording
| Spectrum Image
|
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