Talk:Unknown Signal
The previous Old Discussion that was originally on this page (below the current) does not match the criteria of this page. New discussion will further be taken place >>here<<. Yalek W (talk)[edit]
== After Further Analysis, this is a military modem that is using a specifically defined v.27ter modulation for possible diplomatic purposes. As this signal is taking place in Malaysia, we dont know the exact nature of the diplomatic telemetry and neither do we know what codings are possible yet.
Old Discussion:[edit]
``Sounds like FLEX. http://www.sigidwiki.com/wiki/FLEX
multimon-ng decodes nothing when using the FLEX demodulator, so, as far as I can tell, not FLEX.
Ywsia1 Yalec: This appears to be a 300 BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. transmission, but whats strange is the format of the 0's and 1's transmitting in this FSKFrequency-Shift Keying signal. To me this almost perfectly matches up with a Mark IV/V/I type pager protocol by multitone, because in its characteristics: it takes 200 Milliseconds for a 0 to send and 400 Milliseconds for a 1 to send. But here's the catcher: Thats exactly whats happeneing here, at 300 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. Now, Mark IV/V/VI can transmit from 250-500 BaudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. It can also specify beep patterns for the pager(s) included....
From Yalek: Wrong. This is actually *1200* baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. Based on the **preambles**, NOT the framing,, (which transmit every 200ms after every data tx), this is not Mark/IV/V/VI. I have found something in regards to what you could be talking about in Mark series paging though. It was an FSKFrequency-Shift Keying signal that did transmit at 300 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. and had some framing as the tx. I will give a sample of 300 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. FSKFrequency-Shift Keying with these 1200 and 1800 marks and spaces. It will sound nothing like this. Yalek out. --Ywsia Yalek (talk)
Requested 300 baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. waveform[edit]
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