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In the interest of full disclosure ... there are
times when the cardiod pattern is not the best for EU reception. Specifically,
when Tstorms get cranked up in the Gulf of Mexico and northern SA, it is not
unusual for the large untuned NE/SW loop with it's figure 8 pattern to
outperform the cardiod ... due to better rejection of the Tstorm
noise.
Jay W1VD WD2XNS WE2XGR/2
----- Original Message -----
From: "DK7FC"
<[email protected]>
To:
<[email protected]>
Sent: Wednesday, March 21, 2018 2:01
PM
Subject: Re: LF: Re: 2200m Trans-Atlantic QSO dream...
> 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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