Рапорты нам с европы и штатов. До штатов никто из наших пока не добил.
A good night for LF JT9-10! UA3DJG, IW4DXW, UA4AAV, UT7GH and N1BUG were picked up here, and Riccardo and I managed to have a "short" QSO. The slow spectrogram barely shows Paul's marginal traces around our sunrise, luckily evading the upcoming 33 Hz railway QRM.
Thanks for the activity and for the nice software!
73, Markus (DF6NM)
Dear LF Group
A successful first outing for SlowJT9 here, with a single decode of N1BUG at 0310 utc, along with UA4AAV, UA3DJG, IW4DXW and DF6NM. Conditions seemed rather noisy, with QRN up to 25dB over the daytime band noise level. There also seems to be a weak signal that sounds like MSK modulation, centered on about 137.08, that raises the noise floor a couple of dB during the quieter periods overnight. Not sure if this is actually there, or a problem with my RX - it faded out at about 0530.
I enabled the "PSK Reporter" facility in SlowJT9, but it seems that only CQ calls appear in the database, therefore only IW4DXW is logged there. I have attached a text file of the overnight log.
Cheers, Jim Moritz
73 de M0BMU
Hello all,
My overnight report from decoded.txt
local time displayed: UTC+1
N1BUG received twice, SlowJT9-10 is definitely the mode of choice for T/A QSO
Thanks Rik, btw you should enlarge the band activity window
19-11-02 18:00 1700 -36 0.0 330 X UA4AAV LO21FD
19-11-02 19:20 1820 -35 0.0 330 X UA4AAV LO21FD
19-11-02 20:00 1900 -33 0.0 300 X UA3DJG KO95CN
19-11-02 20:10 1910 -35 0.0 300 X UA3DJG KO95CN
19-11-02 20:10 1910 -29 0.0 350 X IW4DXW JN64BW
19-11-02 20:20 1920 -33 0.0 300 X UA3DJG KO95CN
19-11-02 20:30 1930 -31 0.0 300 X UA3DJG KO95CN
19-11-02 20:30 1930 -27 0.0 350 X IW4DXW JN64BW
19-11-02 20:40 1940 -31 0.0 300 X UA3DJG KO95CN
19-11-02 20:50 1950 -33 0.0 300 X UA3DJG KO95CN
19-11-02 20:50 1950 -29 0.0 350 X IW4DXW JN64BW
19-11-02 21:00 2000 -33 0.0 300 X UA3DJG KO95CN
19-11-02 21:10 2010 -33 0.0 300 X UA3DJG KO95CN
19-11-02 21:10 2010 -31 0.0 350 X IW4DXW JN64BW
19-11-02 21:20 2020 -30 0.0 300 X UA3DJG KO95CN
19-11-02 21:30 2030 -32 0.0 300 X UA3DJG KO95CN
19-11-02 21:40 2040 -32 0.0 300 X UA3DJG KO95CN
19-11-02 21:40 2040 -32 0.0 315 X IW4DXW JN64BW
19-11-02 21:50 2050 -22 0.0 290 X DF6NM JN59NJ
19-11-02 21:50 2050 -31 0.0 300 X UA3DJG KO95CN
19-11-02 22:00 2100 -32 0.0 300 X UA3DJG KO95CN
19-11-02 22:00 2100 -31 0.0 315 X IW4DXW JN64BW
19-11-02 22:00 2100 -35 0.0 330 X UA4AAV LO21FD
19-11-02 22:10 2110 -24 0.0 290 X DF6NM JN59NJ
19-11-02 22:10 2110 -32 0.0 300 X UA3DJG KO95CN
19-11-02 22:20 2120 -32 0.0 300 X UA3DJG KO95CN
19-11-02 22:20 2120 -31 0.0 315 X IW4DXW JN64BW
19-11-02 22:30 2130 -34 0.0 300 X UA3DJG KO95CN
19-11-02 22:30 2130 -32 0.0 315 X IW4DXW JN64BW
19-11-02 22:40 2140 -35 0.0 300 X UA3DJG KO95CN
19-11-02 22:50 2150 -33 0.0 300 X UA3DJG KO95CN
19-11-02 22:50 2150 -35 0.0 315 X IW4DXW JN64BW
19-11-02 23:00 2200 -31 0.0 300 X UA3DJG KO95CN
19-11-02 23:00 2200 -33 0.0 315 X IW4DXW JN64BW
19-11-02 23:10 2210 -30 0.0 290 X DF6NM JN59NJ
19-11-02 23:10 2210 -33 0.0 300 X UA3DJG KO95CN
19-11-02 23:20 2220 -33 0.0 300 X UA3DJG KO95CN
19-11-02 23:20 2220 -31 0.0 315 X IW4DXW JN64BW
19-11-02 23:30 2230 -31 0.0 300 X UA3DJG KO95CN
19-11-02 23:40 2240 -33 0,0 300 X UA3DJG KO95CN
19-11-02 23:40 2240 -36 0,0 350 X IW4DXW JN64BW
19-11-02 23:50 2250 -36 0,0 300 X UA3DJG KO95CN
19-11-03 00:10 2310 -36 0,0 300 X UA3DJG KO95CN
19-11-03 00:10 2310 -36 0,0 350 X CQ IW4DXW JN64
19-11-03 00:20 2320 -33 0,0 300 X UA3DJG KO95CN
19-11-03 00:20 2320 -36 0,0 350 X IW4DXW DF6NM R-18
19-11-03 00:30 2330 -31 0,0 300 X UA3DJG KO95CN
19-11-03 00:40 2340 -35 0,0 300 X UA3DJG KO95CN
19-11-03 00:40 2340 -28 0,0 350 X IW4DXW DF6NM -18
19-11-03 00:50 2350 -35 0,0 300 X UA3DJG KO95CN
19-11-03 00:50 2350 -33 0,0 350 X DF6NM IW4DXW R-25
19-11-03 01:00 0000 -36 0,0 300 X UA3DJG KO95CN
19-11-03 01:00 0000 -25 0,0 350 X DXW NM R73 GN
19-11-03 01:10 0010 -28 0,0 350 X DF6NM IW4DXW 73
19-11-03 01:20 0020 -33 0,0 350 X IW4DXW JN64BW
19-11-03 01:40 0040 -30 0,0 350 X IW4DXW JN64BW
19-11-03 02:20 0120 -30 0,0 350 X IW4DXW JN64BW
19-11-03 02:40 0140 -34 0,0 350 X IW4DXW JN64BW
19-11-03 02:50 0150 -36 0,0 300 X UA3DJG KO95CN
19-11-03 03:00 0200 -32 0,0 350 X IW4DXW JN64BW
19-11-03 03:20 0220 -34 0,0 350 X IW4DXW JN64BW
19-11-03 03:40 0240 -33 0,0 350 X IW4DXW JN64BW
19-11-03 04:30 0330 -34 0,0 300 X UA3DJG KO95CN
19-11-03 04:40 0340 -34 0,0 300 X UA3DJG KO95CN
19-11-03 04:50 0350 -34 0,0 300 X UA3DJG KO95CN
19-11-03 05:00 0400 -36 0,0 300 X UA3DJG KO95CN
19-11-03 05:30 0430 -35 0,0 300 X UA3DJG KO95CN
19-11-03 05:40 0440 -37 0,0 300 X UA3DJG KO95CN
19-11-03 07:10 0610 -37 0,0 370 X N1BUG
19-11-03 07:50 0650 -36 0,0 370 X N1BUG
19-11-03 09:40 0840 -37 0,0 350 X IW4DXW JN64BW
Michel - f5wk JN18HP
Finally managed to receive 22 sequences from UA3DJG here in West London on an e-field probe + IC7300
Neither the radio nor the local EMI helped.
The IC7300 has a lot of internally generated interference on 2200m so the preamp in the antenna helped lift the signal above the background noise
First decode was at 00.10 when I realised that my version of Rik's software needed to see 400 - 416Hz Hz audio before it would decode.
Final reception was at 04.20 UTC
Thanks for an interesting evening + 2558km
David
M0MRF
Dear Markus, LF Group,
That is an interesting possibility - I don't think it is the RX generating IM products; this has quite narrow bandpass filtering at the input, plus the loop antenna has a fairly narrow bandwidth, and there do not seem to be suitable candidate signals in the vicinity of 137k. I have seen this signal quite consistently after dark, but no trace during the day, and it exhibits an "ionospheric-looking" QSB. Audibly, it does sound like a signal rather than mains QRM or something else. I have attached a screenshot from early last night; the bright line at 137.1k is UA3DJG's back-to-back JT9 transmissions.
Cheers, Jim Moritz
73 de M0BMU
Hello all,
Really a nice LF radio night !
Managed to decode in JN80nu : UA4AAV, UA3DJG, IW4DXW, UT7GH
, DF6NM.
The log is at
https://qsl.net/iz7slz/WSPR/JT910DECODED.TXTUnfortunately no T/A decodes of N1BUG but i hope to receive him next nights.
Decoder setup here is obtained using vlfrx-tools to read the raw audio from the storage drive, apply the noise-blanker and then creating a temporary wave file that is speeded-up with 'sox'. These are the commands involved:
vtread -v -T $TIMESLOT,+650 /run/user/1000/gvfs/smb-share:server=192.168.0.13,share=lf | #read raw audio from storage hd 60s early
vtfilter -v -h bp,f=1500,w=3000 -h bs,f=2850,w=80 | #apply filter before NB
vtblank -v -a20 -d0.001 -t300 | # Noise Blanker
vtcat -v -T $TIMESLOT -S60 | #buffer starts 60s after
vtmult -f 1000 | # mixer for lowering the reception frequency range
vtmix -c 1,-j | #upper side band
vtraw -v -ow > tmp.wav #create temporary wav file
sox tmp.wav $FILENAME speed 12 #create speeded-up wav file
jt9 -9 -d 3 $FILENAME #jt9-1 decode
The awk command is invoked to rectify on the log the frequency, TD and S/N:
awk '{ $5 = $5/12+137000; $3=$3-10; $4=$4+0.8; $2=$6=$(NF)=""; print $0 }' decoded.txt > decoded2.txt
Thanks to all transmitting stations that have provided good signals for testing this routine and to Rik OR7T for the SlowJt9 project.
Planning to restore my transmitting antenna this week, i hope to joint the 'party' next weekend.
73,
Domenico
IZ7SLZ