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Author Topic: CIS Navy on HF  (Read 13703 times)

Offline Josh

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Re: CIS Navy on HF
« Reply #15 on: December 19, 2019, 1709 UTC »
8345 0607Z 19DEC19
VVV VVV RIW RIW RIW de RCJG RCJG QSA? K
RIW RIW de RCJG RCJG FOR RJH45 =SML= (groups) K RCJG

0613Z VVV RIW RIW RIW de RCJG RCJG QSA? K

0623Z VVV RIW RIW RIW de RMUW RMUW QSA? K


1432Z 12464
RCJG RPT (groups)

1422Z RCJG QRU K

1502Z RIT RIT RIT de RHO62 RHO62 QSA? QTC K

1509Z RIT RIT RIT de RHO62 RHO62 (groups)

1514Z RIT RIT RIT de RHO62 RHO62 QSA? OK QRU K

1629Z VVV RIW RIW RIW de RCJG RCJG QSA? QTC K

1630Z RCJG RPT (fade) S6109 8654T

1631Z RCJG RPT K

1632Z RCJG RPT K

1634Z VVV RIW RIW RIW de RCJG RCJG NO K
 
1635Z RCJG QRU K

1636Z RCJG QRU K
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Offline Josh

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Re: CIS Navy on HF
« Reply #16 on: December 20, 2019, 0547 UTC »
8345 0647Z 13DEC19
VVV RIW RIW de RMUW RMUW RMUW NR 63 RPT K

0644Z RMUW RPT

0659Z VVV RIW RIW de RMUW RMUW QSA? K

0700Z RMUW RPT NR 63 RPT QSA?

0702Z RMUW RPT (then into groups)
99360 70060 (errors) 92610 K

0704Z RMUW OK QRI





RMUW is the Shakhter (SB-922), a Sliva class salvage tug of the Black Sea Fleet.
https://www.vesselfinder.com/vessels/SHAKHTERSK-3-IMO-7038642-MMSI-273397210

https://www.vesselfinder.com/?imo=7038642
not too shabby dx for a tiny bobber off the east coast of Russia

Is it?
"Shakhter" (ex-SB-922) is now RFS Shakhtyor (Шахтер) - IMO 8406652  call sign?
Black Sea Fleet
https://nok-schiffsbilder.de/modules/myalbum/photo.php?lid=46419

Thanks for the info, also far as I've seen there are three of the class with the same name and a numeral, I've no clue exactly wich is ota when I catch them.
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Offline Josh

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Re: CIS Navy on HF
« Reply #17 on: December 20, 2019, 2134 UTC »
1528Z 20DEC19 VVV RCV RCV RCV de RHO62 RHO62 QSA? QTC K
(groups)

lotsa errors, had to guess at some words but we know the message format so no worries, just need the calls

1530Z 20DEC19 VVV RCV RCV RCV de RHO62 RHO62 QSA? QTC K
(groups)

1534Z 20DEC19 VVV RIW RIW RIW de RHO62 RHO62 QSA? QTC K

multipath was bad, lotsa dit and dah smearing even with the noise floor at -130dBm and sigs at -125 or stronger, preamp got the floor down to -140 but didn't help, neither did wider filtration

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Offline JCMaxwell

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Re: CIS Navy on HF
« Reply #18 on: December 21, 2019, 0547 UTC »
8345 kHz

12/21/2019

0546z through 0652z, intermittently.

no decoder running
« Last Edit: December 21, 2019, 0653 UTC by JCMaxwell »
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Offline Josh

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Re: CIS Navy on HF
« Reply #19 on: December 21, 2019, 1624 UTC »
Here's a wav recording of this morning's proceedings;
https://www.filemail.com/d/ugvoyeksutfilgp

The 1400Z take was right at greyline and very weak, the 1500Z take was better, however you can tell when they switched ops or the same op reduced speed, they had a few repeat sessions and that may be why they reduced speed.
 Think I got the entire session, but had to be fast on the pause button to reduce file size so some characters at the beginning of each sentence may be missing.

There was random othr as well as other noises present but the band for the most part was quiet. Rig was a Xiegu G90 at 100Hz filter, antennae an ocdf, recording done by WCODE.
Conditions were -127dBm noise floor with up to -110dBm signal levels.

Still listening to 12464 @ 1615Z and an incredibly weak sig is just making it over the noise, so propa from there to here seems done for the day on this band.
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Offline Josh

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Re: CIS Navy on HF
« Reply #20 on: December 21, 2019, 1628 UTC »
8345 kHz

12/21/2019

0546z through 0652z, intermittently.

no decoder running



No copy here due local rfi source on 8345 at that time, but keep up the good work, you'll be decoding in no time!
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Offline JCMaxwell

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Re: CIS Navy on HF
« Reply #21 on: December 22, 2019, 0611 UTC »
8345 kHz

12/22/2019

0603z through 0619z, intermittently.

no decoder running
« Last Edit: December 22, 2019, 0619 UTC by JCMaxwell »
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Offline Josh

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Re: CIS Navy on HF
« Reply #22 on: December 22, 2019, 2232 UTC »
Some who follow the RU Navy on hf say there is no distinct and absolute transition from day to night freqs as I've noted for 0600/1800, that stas will use whatever frequencies are propagating.
That stands to reason, however I note a distinct lack of traffic on 8mHz after about 0700 and 12mHz after 1900, so they do qsy near those times as far as I'm concerned.

What must always be kept in mind is what stas the ships are trying to contact, thus if those stas are in daylight or not, and weather there's a need and/or possibility for long haul (higher freq) or nvis (lower freq) hf comms.
Apparently in an effort to enhance signals security, much cw traffic has been moved from long haul to more nvis and localised networks, as well as satcom. Meaning instead of 12464, 8345, and other ranges noted for reliable long distance propagation, they're all down in the 3 and 4mHz range.
This effort to enhance signals security is problematic for us eavesdroppers located far away from the ships and their respective shore stas.

Earlier today (too lazy to get out from under warm covers to see what time it was and convert that to utc or moscow time) on 8mHz, RMUW was calling RIT, RCV, and RIW in turn and not getting any response for all I can tell, as RMUW had traffic to pass but apparently no shore station heard him so no groups were sent on 8mHz. They might have had success on another freq but I didn't copy any.




This series of reality show (ie scripted) vids has some really neat hardware as well as underway operations of interest to anyone who follows RU Navy;
https://www.youtube.com/watch?v=XhCGtc4kWDQ
« Last Edit: December 22, 2019, 2240 UTC by Josh »
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Offline JCMaxwell

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Re: CIS Navy on HF
« Reply #23 on: December 23, 2019, 0209 UTC »
8345 kHz

12/23/2019

0209z  - almost non-stop past ten minutes

no decoder running

Josh, I replied to your PM.
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Offline Josh

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Re: CIS Navy on HF
« Reply #24 on: December 23, 2019, 1958 UTC »
0329Z 22DEC19 8345 VVV REO(?) de RHO62 RHO62 (groups)

0408Z "                                                                             "

0620Z VVV RIW RIW RIW de RHO62 RHO62 QSA? QTC K

1527Z 23DEC19 12464 VVV RDV RDV RDV de RHO62 RHO62 QSA? QTC K
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Offline JCMaxwell

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Re: CIS Navy on HF
« Reply #25 on: December 29, 2019, 0023 UTC »
8345 kHz

12/29/2019

0020zulu  - almost non-stop past thirty minutes

no decoder running
« Last Edit: December 29, 2019, 0055 UTC by JCMaxwell »
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Offline JCMaxwell

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Re: CIS Navy on HF
« Reply #26 on: December 29, 2019, 1656 UTC »
12464 kHz

12/29/2019

1650z, 1658z  - brief transmissions

no decoder running
« Last Edit: December 29, 2019, 1700 UTC by JCMaxwell »
IC-R9000L, FDM-S2, Belka DX, HF+ Discovery, RSPdx, IC-R30, BC125AT, PL-880 <- W6LVP Loop

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Offline Josh

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Re: CIS Navy on HF
« Reply #27 on: December 29, 2019, 1952 UTC »
When you hear traffic on 8345 or 12464 look for the other side of the duplex channel on the following freqs;

RIW Moscow sends to ships on 9145, 11000, 14556

RCV Sevastopol sends to ships on 15586 day and 7566 night, with weather reports also on 5915, in the past on 10543

RIT Murmansk (artic circle) 5343, 7467, 11155

RAA St Petersburg 8120

RJS Vladivostok (pacific coast of Russia) 4048, 5411, 7632, 10203, 13636

RIW, RIT, and RCV are the most commonly copied hq calls heard here, so whoever is called by the ship being monitored, look for a response to their call on the designated channels.
The top two are also the most likely to be heard here due their locations, I don't expect to hear RJS Vladivostok (means something like Ruler of East) at all for the most part due the distances and would be surprised if I could hear RIT Murmansk.







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Offline JCMaxwell

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Re: CIS Navy on HF
« Reply #28 on: December 29, 2019, 2051 UTC »
Thanks Josh.
IC-R9000L, FDM-S2, Belka DX, HF+ Discovery, RSPdx, IC-R30, BC125AT, PL-880 <- W6LVP Loop

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Offline Josh

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Re: CIS Navy on HF
« Reply #29 on: December 30, 2019, 2158 UTC »
The part of the 12mHz band we listen to is populated with many strange creatures (other than ourselves of course).
From Piscadors in Spanish ssb to various other maritime assets communicating, for example at 12577.0 kHz (tune 2kc lower to decode) we have a global gmdss freq that sees a lot of traffic.
Another frequent visitor is a othr of some type who often plops their doppler correction/equalizer training tone right on 12464, when he's on freq you hear the letter O sent in slow morse and then a burst of radar fart, when he's off freq you just hear the fart.

The portion of the 8mHz band we tune to also has nearby non-naval maritime cw freqs that are still active in addition to the CIS Naval channels. It also sometimes gets a visit from a radar/fart and loads of pescadors pescadoring.

This extraneous traffic is why a rig with a fish finder (panadapter display) is so wonderful for the hobbyist, you can see what is going on around you, and in most cases identify the type of signal without tuning to it.

In the near future the sdr will be hooked back up to the tenna so multiple vrx operation can ensue, being able to copy both sides of a duplex net without having to switch vfos will be interesting. In the past, pros (men from US Army, Navy, and Air Force on loan to NSA) would stand watch for hours with two or three R390As sitting in front of them, one R390A tuned to the outstation (in our case the ships) and another R390A tuned to the control (Naval hq), with the other R390A (in the case of the lucky ones who had 3 R390As) tuned to a hfbc station playing current rock music, shoes off and cup of coffee in hand, copying morse traffic by pencil or on a mill (typewriter). Their logs would then be sent to NSA and the various commands who wanted the traffic, today we just want to see who we can hear, however NSA (and other sigint orgs around the world) watches us and our logs too. Hi guys!
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