Catégorie : intel

Russian INTEL experiments

Yet another activity this weekend from the Russians

Signals heard on Saturday and Sunday 10/11 dec 2016 active on Friday 16 also

19374.0 USB 16/12/16
18239.0 USB 10/12/16 11:18
17462.0 USB 10/12/16 11:37
15961.0 USB 10/12/16 12:11
18591.0 USB 11/12/16 8:47 (0845z sked) sun
17414.0 USB 11/12/16 8:50 (0850z sked) sun  
16211.0 USB 11/12/16 8:55 (0855z sked) sun   
17462.0 USB 11/12/16 09:33
20718.0 USB 11/12/16 10:09
20093.0 USB 11/12/16 10:34
18239.0 USB 11/12/16 11:04

It’s not the first time they use that waveform, I called it « стра́нный-E »

5 x mFSK-16 (br:10Bd sh:20Hz) w/ 250Bd BPSK 520ms breaks every 10.12 secs (carrier changes from 2250Hz to 1000Hz) – there are 96 mfsk tones between the bPSK bursts = 9.6sec of data

21123.jpg

This time the specific preamble & tail were sent, shown below:

preamble:

786578.jpg

tail:

87775

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Russian INTEL experiments

Yet another activity this weekend from the Russians
Signals heard on Saturday, 26 and Sunday, 27 2016 with the same cycle:

 0900z 20834.0 USB
 0910z 19649.0 USB
 0920z 18303.0 USB
 0930z 16076.0 USB
 0940z 14477.0 USB
 0950z 13494.0 USB

It was a mFSK-16 at 66Bd, for ~4min30s, no specific preamble (direct mFSK-16 waveform start at 09×0 UTC)

005

It’s not the first time they use that waveform, I called it « стра́нный-C »
Previously heard at 16.5Bd, 33Bd & 132Bd

archive

update: November, 30
16.5Bd variant data for 6 minutes long

1300z 10174.0 USB
1320z 9243.0 USB
1340z 7663.0 USB

update: December, 1
132Bd variant data for 2min 45sec long

1200z 11557.0 USB
1210z 11083.0 USB
1220z 10161.0 USB
1230z 9267.0 USB
1240z 8097.0 USB
1250z 7563.0 USB

update: December, 4
66Bd variant data for 4min 28sec long

0900z ? (missed) but nearby 20837
0910z 19673.0 USB
0920z 18306.0 USB
0930z 16099.0 USB
0940z 14496.0 USB
0950z 13498.0 USB

33Bd variant data for 3min 53sec long (see December, 1st)

1200z 11557.0 USB
1210z 11083.0 USB
1220z 10161.0 USB
1230z 9267.0 USB
1240z 8097.0 USB
1250z 7563.0 USB

&linkz

The Russian INTEL digimode experiments

RUS_digimode_trials_v5Here is a sheet showing what I have already spot from them
more to follow…

jan 2016 update:
another version of « стра́нный-C » has been spotted using ~131.5Bd, along with the wide 2×64 tone OFDM (zero beat at center)

Apr 2016 update:
a variant of « стра́нный-D » has been spotted on 19, April 2016, I named this as « стра́нный-G » from now (BPSK 250Bd breaks were replaced by FSK 125Bd with 62.5Hz/250Hz & 500Hz shifts)

nov 2016 update:
another version of « стра́нный-C » has been spotted using 66Bd, no preamble
&linkz

The Russian INTEL digimode experiments

RUS_digimode_trials_v5

Here is a sheet showing what I have already spot from them
more to follow…

jan 2016 update:
another version of « стра́нный-C » has been spotted using ~131.5Bd, along with the wide 2×64 tone OFDM (zero beat at center)

Apr 2016 update:
a variant of « стра́нный-D » has been spotted on 19, April 2016, I named this as « стра́нный-G » from now (BPSK 250Bd breaks were replaced by FSK 125Bd with 62.5Hz/250Hz & 500Hz shifts)

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yet another oddity from the Russians (FSK reversals)

Again, the Russians were active on HF using an unknown & weird waveform
That time it’s only FSK reversals with uncommon settings (I’ve measured 16.1Bd with a 1000Hz shift, sent with an offset AF +1500Hz)

2 cycles were identified on 31 october 2015 (confirmed 1 week later, 7 nov 2015), as sked, every 5 minutes and TX lasts for exactly 3 minutes (time in UTC, frequencies in USB):
revs_sked2

The TX had spurious images on each sides of its main frequency, as seen on the DIGIMODE experiments recently spotted (https://radiomonitoring.wordpress.com/2015/11/01/the-russian-experiments-hf-digimode/), which suggests a relation between the 2 activities
revs_spurs

revs_start

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The Russian experiments (HF digimode)

The Russians (prob INTEL) are back into DIGIMODE experiments on last days..

That waveform has been spotted on (at least) 5 frequencies in 2 days, 30 & 31 october 2015
short description of the waveform : 5x mFSK-16 (br:20Bd sh:20Hz) w/ short 250Bd BPSK breaks every 10 secs (carrier changes from 2250Hz to 1000Hz, randomely?) + 1750/1500 tone sequence as EOT
PS: the EOT tone sequence is the same heard on other Russian digimode experiments

That modem trials were already active in 2013 and I’ve made a video of it in the past:

exper
6863

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