Message-ID: <4EB32BA4.7090504@iup.uni-heidelberg.de>
Date: Fri, 04 Nov 2011 01:02:44 +0100
From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= <Stefan.Schaefer@iup.uni-heidelberg.de>
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To: rsgb_lf_group@blacksheep.org
References: <4EB04901.707@broadpark.no> <4EB04EAD.6000506@iup.uni-heidelberg.de> <4EB2F1B7.40700@broadpark.no>
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Subject: Re: LF: Transmission on 8,97khz in the near future?
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Hello Steinar,

Unfortunately the link doesn't work here. Can you send me a link to a=20
screenshot?
Would be interesting to see what you can see on a wideband screen.
The wind situation looks a bad as in the last weeks, so no kite=20
experiment but i will carry the coil here to the fixed antenna for a=20
QRPPP test. It's all to long ago i find.

73, Stefan/DK7FC

Am 03.11.2011 20:55, schrieb Steinar Aanesland:
> hi Stefan
>
> It's my environment is probably to nosy , especially around 8khz . Take
> a look at my grabber.
>
> My E-field antenna is about 10m from my house.
>
> http://80.202.132.143:8081/
>
> la5vna S
>
>
>
>
>
>
>
>
>
>
> On 01.11.2011 20:55, Stefan Sch=E4fer wrote:
>   =20
>> Hello Steinar,
>>
>> A few hours ago i wrote an email to some VLF grabber runners. There i
>> announced further tests on my fixed antenna here in Heidelberg. This
>> antenna performs well on LF but on VLF the signals are rather poor.
>> Anyway, the QRN is as low as never seen here in the last days so i
>> actually think there could be a chance to see my signal.
>> A next kite experiment is planned as well but unfortunately there was
>> no suitable wind since many weeks. It has to be on a weekend, so that
>> many stations find so time to view... I'll keep an eye on the wind
>> forecast. The experiments on the fixed antenna here are independent of
>> wind of course but the signal will be at least 30 dB lower!
>> You have to have a good prepared SpecLab configuration to see anything
>> at all. Something like "DFCW-6000" is needed for the fixed antenna and
>> our distance.
>> It would be interesting to see some "wideband" screenshots from you
>> before we start, i.e. a plot over several hours, covering 0...24 kHz
>> or so, as seen on almost any VLF grabbers. This helps to identify your
>> noise and sensitivity situation. Can you publish such a spectrogram he=
re?
>> If you need further advice, just ask.
>> So, maybe next week i will do a test here on the fixed antenna,
>> radiating about 50 uW ERP.
>>
>> 73, Stefan/DK7FC
>>
>> PS: Lubos/OK2BVG, when will you be on air again?
>>
>>
>>
>> Am 01.11.2011 20:31, schrieb Steinar Aanesland:
>>     =20
>>> Hi all,
>>>
>>> Is there any plans for a transmission on 8,97khz in the near future?
>>> I have made me an active E-field antenna
>>> (https://sites.google.com/site/sub9khz/antennas/e_field_DK7FC.jpg?att=
redirects=3D0)
>>>
>>> and it could be very interesting to see how well it works .
>>>
>>> la5vna Steinar
>>>
>>>
>>>
>>>
>>>       =20
>>
>>
>>     =20
>
>
>
>   =20