LF: 136 JT9-10 T/A

[<jrusgrove@comcast.net>]

Stefan

 

Conditions were favorable with DST running -15 nT and static levels about 4 on a 10 scale (1 dead of winter, 10 middle of summer). Signals were in early,  dropped down for a few hours and then re-emerged ... which is normal for T/A signals this time of year. Six decodes. Did not run spectrogram. Congrats on 1st 136 kHz JT9 T/A!

 

UTC Date: 2012-Nov-29

 

2329   3  -34   0.0 1419.83   0   DK7FC JN49IK                 4 10
2339   2  -36   0.0 1419.83   0   DK7FC JN49IK                22 10
2349   3  -35   0.4 1419.82   0   DK7FC JN49IK                11 10

UTC Date: 2012-Nov-30

0229   2  -35   0.9 1419.87   0   DK7FC JN49IK                60 10

0249   1  -36   0.9 1419.87   0   DK7FC JN49IK                 7 10

0319   1  -36  -0.4 1419.88   0   DK7FC JN49IK                 5 10

 

Jay W1VD  WD2XNS  WE2XGR/2

 

 

 

 

 

----- Original Message -----

From: Stefan Schäfer

To: rsgb_lf_group@blacksheep.org

Cc: Vasily Savchenko ; Joe Taylor

Sent: Friday, November 30, 2012 8:42 AM

Subject: Re: LF: 136 JT9-10

Hello LF,

Thanks to DF6NM, RN3AGC, F5WK, DF2JP, UA0SNV, SV8CS, W1VD, LA5VNA (and those which i forgot to mention) for the JT9-10 reports on 137.42 kHz!!

I guess that was a first TA crossing in JT9 on LF. Jay, did you have local QRN or was it a quiet night? Did you try to watch the signal in a spectrogram? How many decodes did you get in the night? Or was it the only one? 23:30 is normally the time where the band opens between us these days, so i guess there have been a number of further decodes. Looking forward to that :-)

Would be gain 10*log(30/10) = 4.77 dB SNR when going from JT9-10 to JT9-30, assuming there is no negative effect due to QSB and so on? Would someone be interested in tests in JT9-30?

I guess this evening is reserved to MF CW here but late in the night i could run some JT9-30 sequences. MF alternatively.


There have been further decodes at UA0SNV (5760 km over land):

All that I received today.

1949   0  -38   2.2 1419.65  -1   DK7FC JN49IK
2009   3  -35   1.3 1419.62   0   DK7FC JN49IK
2019   2  -36   1.7 1419.56   0   DK7FC JN49IK
2149   5  -32   2.6 1419.65   1   DK7FC JN49IK
2159   3  -34   2.6 1419.65   1   DK7FC JN49IK
73 !! Vasily.

Best 73, Stefan/DK7FC




Am 30.11.2012 00:32, schrieb jrusgrove@comcast.net:

Bingo

2329   3  -34   0.0 1419.83   0   DK7FC JN49IK

http://www.w1vd.com/grabber.html

Jay W1VD  WD2XNS  WE2XGR/2