Re: LF: no decodes, help needed

[Chris 4X1RF <chrisgomy@gmail.com>]

Markus, LF,

I've also got no decodes on your yesterday late evening first test but failed to make a .wav recording. Today I have installed the updated wsjx.exe and tried to decode your noon JT-30 transmissions. You were clearly visible in the waterfall but the program crashed twice before the 30min slot ended.

73s
Chris 4X1RF

On Sun, Oct 28, 2012 at 7:11 PM, Markus Vester <markusvester@aol.com> wrote:

Sporadic decodes on JT9-2:

 

1646 10 -14 0.4 1930.52 0.00 CQ DK7FC JN49

1648 1 -30 -0.1 1878.56 0.00

1650 10 -15 0.4 1930.67 0.00

1652 10 -21 0.4 1933.99 0.00 PA0A TEST

1654 10 -14 0.0 1931.14 0.00

1656 5 -25 0.4 1934.07 0.00 PA0A TEST

1658 10 -16 0.4 1930.57 0.00 CQ DK7FC JN49

1700 4 -26 0.4 1934.23 0.00

1702 10 -14 0.4 1930.83 0.00

1704 10 -22 0.4 1933.99 0.00 DK7FC PA0A JO33

1706 10 -16 0.4 1930.33 0.00

1708 10 -21 0.4 1933.99 0.00 DK7FC PA0A JO33

 

PA0A has been sending in every even 2-minute slot, and DK7FC in every odd one. DK7FC should be stronger than indicated, usually positive dB's in WSPR. Will save some wavs of missing decodes.

 

Best 73,

Markus (DF6NM)

 

From: Markus Vester

Sent: Sunday, October 28, 2012 5:52 PM

To: rsgb_lf_group@blacksheep.org

Cc: rsgb_lf_group@yahoogroups.co.uk

Subject: Re: LF: no decodes, help needed

I'm receiving a strong JT9-1 signal on even minutes which must be from DK7FC, but like with PA0A I'm getting no decodes. Strange thing is that though the signal was clearly absent at odd minute slots, WSJT-X seemed to produce an echo. This appeared on the waterfall and sync aquisition, but of course won't decode either.

https://dl.dropbox.com/u/26404526/jt9-1_dk7fc_echo.png

https://dl.dropbox.com/u/26404526/jt9-1_dk7fc_echo_waterfall.jpg

 

This effect seems to be peculiar to JT9-1, and does not happen at JT9-2, which appears to decode nicely:

 

1646 10 -14 0.4 1930.52 0.00 CQ DK7FC JN49

 

Best 73,

Markus (DF6NM)