HFU HF Underground

Loggings => Utility => Topic started by: n8hensley on March 07, 2013, 0350 UTC

Title: RTTY ~4984 kHz 0330z
Post by: n8hensley on March 07, 2013, 0350 UTC

Hearing RTTY (I assume) around 4984 kHz, USB. I understand this is within a broadcast band, so this shouldn't be here. Does anyone know what this is?

Title: Re: RTTY ~4984 kHz 0330z
Post by: cmradio on March 07, 2013, 0356 UTC

Heard it last couple nights very weakly.

Could you decode it?

Peace!

Title: Re: RTTY ~4984 kHz 0330z
Post by: glimmer twin on March 08, 2013, 0308 UTC

4850 - 4995 is Broadcast + fixed + Land Mobile, so a utility station isn't necessarily out of place here.

Title: Re: RTTY ~4984 kHz 0330z
Post by: Fried Chickin' on January 10, 2020, 0531 UTC

Russian diplo/Ru. Navy (Black Sea) Coming in to NH now at S9+20. Trying to decode... Will post more later if successful.
Currently "decoding" at 850Hz/75.0 baud rate/2000Hz Center freq.
Gettling a lot of letters, with no special characters or numbers, so that tells me that maybe I'm doing something right. The letters, however, are unintelligible or...encrypted...
Here have a look...
"PLMO
OO
T MC

A
VOIMA
CMLCCNNCTLN
NVNTLNLC
VN

CT
CNLT
M
L
NM
NCN
LL
MLLTNMMTTTTMNNNMTMTNLVCCLMLLVNVN
MNNL
ML
LMVVC
MCVCMTNLMTNCLVMTNCTLTNTTCVNT
CMT
NVTVVNVVVNTCMVNTVNMMVLMMLTNLVV
VCN
NLTVCTVCMMNN


CVMLCLNMTTM
TMCCM
MM
NV
CMMVCTCMLVNLVCNMVMMTN
T
TLCCTLLC
TV
NL
VNCNNM
M
NV
NC
NCTLNCTNNMLM
VMC
LC
VVNTTMNCVCTCLCLNNTVN
MVNCMVVNTVCVL
V
VLNLMVT
VMLLV
CNVNNTTTCTLTMMVLTLCCNLMTLNNNMMLLTLMTVMCTNMC
TTNLCCCLVLCC
V
M
LNV
TLCTNNMTCN
NNV
LCLTLNNMVNMLMLMLN
MLTCVLV

CCN
L
VMNMN
MMNVC
NC
NMCLVLNCTMNVCCTNLNNLCCVN
VMTCVCNLV
CTNL

TL
CTVLTLC
TVT
LNTVVVL
L

NLMNVMLTCCMCMMLMNC
TTVLN
C

MCM


L
M
N
NLTCNLMVLT
CMNTVTLCVVCLCMCTVCNVVMVTTTVNMTLMTTCLCT
TCLTMCTV
MNCVTTNTVTLLV
LCLNV

NCCCNTCTMTMTLVVLMM

T

CC
NTV
CTNV
VTLVCMMTLLLNCMCVNMVMTNTVTLLVTVNMMVTV
NNNCNMVMTMM
TC
MCLCVTLCVCCNCNTTC
CTLTNM
C
N
NTMCVNNVVNTCNT
CTV


VL
VL
MC
LMVMMLM

CMVNLTCVNTVLLCMTVMC
TTNV
C
LCMV
CNTTNTNLCCLVMVM
CNMML
CM

L
NNCLTT
TVVVLLML
LCLVVLNLTMCVV
TNLTCLCMCCN
TTVTTL
CL
CVV
NV
V

NTLMLTVLVVV

V

VMNMMMLNNLVLT
MNCVVVL
T

MTNLLL
L
LCVCTNMNMTTMLLMVCVVMMLCCCTVMCVCLMTTLCCNT
LC

LNLOMMNLVC
MVTCMLNCLVC


LMV
MCLVNNVM
CTV


NVTL
VLLCTLTTMVMTCCT

TMCVCNL
LCCLNMNMMM

MLCTLVVC
N
V
TLTCM
LVNLVVLCN
CVMLC
C
M
CTTML
NNTLMCTTMTT
VVNMTMLMCLML
MCVVMVLTTTMVCNVCCCMLL
VT
TMT
CCT
C
NVMVVMTVVLLLCTMM
MLCMV
NLV
VCVCCCNCMLCTMNNLNLCTLNCVTLCNV
NLLNLVNCCT
CLVMVNLC
N
V
TTMMT
C
LTL
G

CMVMTCMCNLTTVNTL
TNNCLTVVT
NMCLCMVNNTVNTNMLTC
LMCCCNCMC
NTLMTLVCNMNVLVNL


LLC
MMVTNMV
CVVLV
VNVTCLNT
LLL
NC


LT
NM
VCLLCMNVMML
MCLVMN
VNLCVLVNNLMVVV
MNCLNCTVLMV
N
LVM
TLTVTLVTT

TLMNTLC
MTLL
CTMVCLVMCMMNNNTVT
LVNCC
MNVNCVVVNVTNTL
VMCVVNCL
VLVM
CVM
TMTCCCMTVTVMT
TVVMCTVV
VTLMLL
NL
CNNVN
CCVVVLMTN
CVT
CVNTMML
NVC
L
GNVNNVN
TNCVC
MMCMMLCVMCNTVNTTLNMTVCNTTMLVVLMM
MTTLVV
CTT
MTVT
LCCC

CVTMN

M
NNNNCTLCVLVNVCV
LNTMVMVNVTNT
NCVVCTNTLC
LTV
NNNVMMTVMNCVLT
LLMNMVVMV
NMNTMMT
TNVCC
VLCNMCTMTCLNTTVNNTN

MNVV
LMTC

NVTVTLN
CNLC
TCV
CMMN
MVVV
C
CL
LMV
MTTVLNLL
LTTNLM
NTVLT
V
TCMVMNMNLTCM
VTL
VTTLLLTVCMN
NMCTM
TL
LCTCNLLMMTV
TCTNCCLTV
VTC
TLLCMMVCC
NLVNCCTCCLLTMMNC
C
VTVLTT
LCTTMCNCVMT
VC
NCLLVMTM
VN
MMCCL
C
LTTNLCNTMC
L
VMLMVCLNMTLNLLCMLLVM
CLTLLL
TLVLCVM
MNLCMLNVTLTNNTCLVMCMM
CMLVVCNVVTC
LNMTNTLMVCCCL
TMCNMVTVCVVMTNC
LLLCVVL
VMNT
LV
CVM
LCLC
TNNMNTMLMVVTVTML
MMTCVMMV
LTVCL
TTL

MVT
CMMM
L
NLNNNMLTLTLNCTMCV
CLNCTV
VN
TL
MNLL
L
CVVCCTTTNTCVMCLN
TTMTMMNCCTCL
TNNC
MLVTTLNLTC
TNV
TNC
VMNCC
MVN


VVCLCNVNMLMCLMNMML
LCN
CLCLCLV
MLCMVVNVTNMLC
TNT
VVMCVTV
VTNLTCMCTVTNLV

CNMMC
TTTCMNMTMNTMTTLNT
CV

TMV
MLVMTVMVCTNM
MTVLTVVTNTTCL
L
MVVTV
CLVV
LLNTTNCLNCMCMMLNC
CCNNCVTTNVNTLNMMNCMC
NLCCV
TLNMTNNLMMCCVTLCMNVTMNCTNMLCVC
NTVNLTCTCVLVLN
TNCMCNMLLNCVTCCLMNVTMLTVMMNT
M
VVNVVMMCTNNLTNCL

VLCCLLLMVCVTC
NTLNMNL
N
MNLTCNVCTC
NNMCVCNTCNLVMM

TVLVNMVCL
MTNLCMNNCM
MMNLCCLTCMV
MTLTNLCT
VN
NTVV

VMTMVVTLCMCLLCMMT
NNLTTMCNC
VCTLTVNCL"

Title: Re: RTTY ~4984 kHz 0330z
Post by: kestryn on March 31, 2020, 0414 UTC

I'm capturing this in the San Diego area.  This is the one utility station that perplexes me right now.  It's perpetual.  My RTTY decode attempts result in the same "roman-numeral"-like decodes.  It seems there is a pattern there, anyway. 

Anyone have progress?  I have some short SDRUno IF WAV recordings and screenshots, but am new to this board, so not yet sure what the best way to share is.

Title: Re: RTTY ~4984 kHz 0330z
Post by: kestryn on March 31, 2020, 0511 UTC

So, a bit more poking around in the forums, etc, and I think this might be the culprit.... STANAG4481:
https://www.hfunderground.com/board/index.php?topic=5990.0

Title: Re: RTTY ~4984 kHz 0330z
Post by: Josh on March 31, 2020, 2119 UTC

I show 4985 as Davidsonville, MD, perhaps a USN BRASS xmission.