SAS3
From Signal Identification Wiki
 | |
|---|---|
| Frequencies | 44.2 kHz |
| Frequency Range | 44.2 kHz - 44.2 kHz |
| Mode | — |
| Modulation | MSK |
| ACF | — |
| Emission Designator | — |
| Location | Sweden |
| Short Description | Swedish navy transmitter for submarine communication. It shares the antenna with SAQ (Grimeton Radio). |
| I/Q Raw Recording | — |
| Audio Sample | |
SAS3 is one of the transmitters with the "Swedish sound".
Swedish MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.) transmitters can easily be identified in the waterfall diagram by their fishbone-like modulation pattern. This seems to belong to the idle phases where no data are transmitted.
The fishbone pattern is even audible as a characteristic modulation.
