FSK441

From Signal Identification Wiki
Jump to: navigation, search

FSK441
FSK441.jpg
Frequencies 144 MHz,444 MHz
Frequency Range 144 MHz - 444 MHz
Mode USB
Modulation FSK
ACF
Bandwidth 1.75 kHz
Location Worldwide
Short Description FSK441 is a high speed meteor scatter communication mode. FSK441 uses a baud rate of 441 Bd.
I/Q Raw Recording
Audio Sample

FSK441 is a high speed meteor scatter communication mode. FSK441 uses a baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate of 441 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. Maximum propagation distance: 2,250 km

Transmitting FSK441 is designed to transmit the same message over and over to give the signals a chance to bounce off of a good meteor coming through the atmosphere.

When receiving FSK441 from distant operators, the signals will come in at varying burst lengths of varying strength. Some can be as long as 10 seconds, and as short as a few hundred milliseconds.

FSK441 is generally used on the 2-meter and 70-centimeter amateur bands.


Audio Sample[edit]

A sample of a FSK441 burst signal captured.


Sample of transmitting FSK441.

Frequencies[edit]

FSK441 is generally used on the 2-meter and 70-centimeter amateur bands.

Decoding Software[edit]

Hobby Level Software

Video Examples[edit]

Additional Images[edit]