Message-ID: <5058C28B.9060009@iup.uni-heidelberg.de>
Date: Tue, 18 Sep 2012 20:50:51 +0200
From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3
MIME-Version: 1.0
To: rsgb_lf_group@blacksheep.org
References: <50589124.1040508@iup.uni-heidelberg.de> <000701cd95b4$6bc8b520$0501a8c0@xphd97xgq27nyf>
In-Reply-To: <000701cd95b4$6bc8b520$0501a8c0@xphd97xgq27nyf>
Subject: Re: LF: Re: WSPR tests by DK7FC
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: quoted-printable
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


Hi Mal,

When was your last 2-way CW QSO (137-137, not the 137-HF stuff) on 137=20
kHz? Who was the worked station?

73, Stefan

Am 18.09.2012 17:43, schrieb mal hamilton:
> Stefan
> Faster speeds are BEST not slower
> I am working on Fast Bursts of CW
> I will have been on the frequency made a contact and gone before you ge=
t
> started !!
>
>
> Mal/G3KEV
>
> ----- Original Message -----
> From: "Stefan Sch=E4fer"<Stefan.Schaefer@iup.uni-heidelberg.de>
> To:<rsgb_lf_group@blacksheep.org>
> Cc: "Joe Taylor"<joe@Princeton.EDU>; "Edgar J Twining"
> <edgarjtwining@virginbroadband.com.au>
> Sent: Tuesday, September 18, 2012 3:20 PM
> Subject: LF: WSPR tests by DK7FC
>
>
>   =20
>> Dear LF group,
>>
>> A few days we started a discussion about a slower WSPR here in the
>> group. After that, i've been in contact with K1JT who meant he will wo=
rk
>> out a slower WSPR version for LF, in a few months (hopefully).
>>
>> Markus/DF6NM kindly prepared a tool to generate different types of WSP=
R.
>> There are 3 versions. The first takes 2 minutes, i.e. the normal WSPR
>> that can be decoded with the normal WSPR software. Then there are slow=
er
>> versions taking 8 and 32 minutes.
>>
>> We want to make some pre-tests to see the SNR improvement of a slower
>> WSPR, i.e. check if it will be confirmed by the SNR display that WSPR-=
8
>> shows a 6 dB better SNR (12 dB SNR improvement for WSPR-32 respectivel=
y).
>>
>> Hopefully this will result in a new DX-mode on LF (Yes Mal, i know :-)=
 ).
>>
>> So now i joined the WSPR group and start to do some test transmissions
>> with the normal 2 minute WSPR code, using Markus' tool. The goal is to
>> see if the tool works properly and what decode levels i can obtain in
>> various distances.
>>
>> A 2 minute WSPR beacon is running here in Heidelberg / JN49IK, 50% TX
>> time. I will run it until tomorrow 6 UTC.
>>
>> Reports apprechiated :-)
>>
>> Please can we try to move the LF reports/hour peak in the diagram abov=
e
>> the level of the 20m band? ;-)
>>
>> Tests using the 8 and 32 minute WSPR will follow soon.
>>
>> 73, Stefan/DK7FC
>>
>> PS: TX pwr may be a bit reduced in first tests, abt. - 10 dB f.s.
>>
>>     =20
>   =20