Hi Paul,
Jay was (and is!?) using a cardioid antenna poiting to the east for that
reception, which is certainly a big advantage.
But how high or low the noise has been, you don't see it on that
spectrogram. A dark noise background does not indicate low QRN, it is
just the setting of the brightness slider in SpecLab.
Unfortunately i'm QRMing my own LF RX due to my regular VLF
transmissions. But the DF6NM grabber is just 175 km more distant and is
active at http://www.df6nm.de/grabber/Grabber.htm
73, GL, Stefan
PS: Using DFCW-90 may be a bit more easy to interprete on the
spectrograms. My transmission was in DFCW-90.
Am 21.03.2018 15:45, schrieb N1BUG:
Wow, Stefan and Jay, that is amazing. I get an impression Jay's
static level was fairly low at the time of that capture. Mine is
never low in March, which suggests my receive antenna may be not so
good. I believe Jay was using directional antennas. I just have a
low noise vertical.
I am setting up to transmit DFCW tonight. My intended target is
DFCW60 on 137.779 but final details will not be available for a few
hours. I will begin testing now. When I am sure I know what I am
doing and have all settings correct, I will make another announcement.
73,
Paul
On 03/21/2018 10:06 AM, DK7FC wrote:
PS: This capture was taken on Jay's side of course.
And just to get an impression, with 25 dB SNR in 28 mHz you can
transfer a 100 character EbNaut message in 5 minutes and have a
spare 6 dB.
A QSO is quickly done then. I mean a real QSO, like "Hello Paul, how
are you? You are 10 dB above the decode limit. The WX is fine here,
just a bit cold."
73, Stefan
Am 21.03.2018 14:57, schrieb DK7FC:
Hi Jay, Paul,
I still have the 12 captures from these 12 months. It was 2012. In
attachment is the image from March. Almost exactly 6 years old!
Time is running!
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