Message-ID: <5AB29E03.8090204@posteo.de>
Date: Wed, 21 Mar 2018 19:01:39 +0100
From: DK7FC <selberdenken@posteo.de>
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To: rsgb_lf_group@blacksheep.org
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Subject: Re: LF: Re: 2200m Trans-Atlantic QSO dream...
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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!
>>>        
>