Message-ID: <507DB0B5.6030501@psk31.plus.com>
Date: Tue, 16 Oct 2012 20:08:37 +0100
From: g3zjo <g3zjo@psk31.plus.com>
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Subject: Re: LF: WSPR on LF
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Alright, alright, let go of my arm. :-)

Actually I though of looking when you said earlier but I have been doing 
other things.

Using my 40m Doublet for 136KHz not too much plasma QRM yet.

Reports via WSPR and signals here 
http://www.g3zjo.talktalk.net/lfgrabber.html

Eddie

On 16/10/2012 18:46, Stefan Schäfer wrote:
> Oh yes, let us all make a MEGA activity on LF tonite, just like the 
> last weekend on MF. That was really fine and impressing for all 
> involved, i assume.
>
> Markus, Albert, Roland, Roger, Eddie, where are you? :-)
>
>
> 73, Stefan/DK7FC
>
>
> Am 16.10.2012 19:37, schrieb Stefan Schäfer:
>> LF,
>>
>> Does someone join in on LF WSPR? There are many active RX stations! 
>> Eddie/G3ZJO, what about you? Your results have been good on MF. On LF 
>> the ERP will be 10 dB lower (ish) if the TX pwr is the same but i 
>> expect that you will have quite good chances in the groundwave range.
>>
>> There is a very high LF/MF and digimode appliance operator density in 
>> the UK ;-) Also in Germany and the Netherlands and France. It looks 
>> like we (these countries) make the highest density of active LF/MF 
>> amateurs in the world, except Tokyo city of course :-)
>>
>> 73, Stefan/DK7FC
>>
>>
>> Am 16.10.2012 15:48, schrieb George Szymanski:
>>> You never know Stefan I might get a weak trace from you overnight!
>>>
>>> I'm too stupid to use Spec lab!
>>> I will try the Twente receiver but my internet is so very slow it
>>> might not work well enough.
>>>
>>> 73 de George, DU1GM
>>>
>>>
>>> On Tue, 16 Oct 2012 15:20:29 +0200, you wrote:
>>>
>>>> Hi George,
>>>>
>>>> There is no chance for you to display normal WSPR from me over that
>>>> distance in a spectrogram. Maybe you could display WSPR-32 but this is
>
>>>> still to optimistic i think. We really have to start in something like
>
>>>> QRSS-120 or DFCW-180 and then see what comes out.
>>>>
>>>> I have no idea how to set Argo for optimal displaying DFCW-180 since i
>
>>>> don't use the new version of the program. Furthermore i am very
>>>> convinced by using Spectrum Lab for LF/MF detection. Yes, the 
>>>> program is
>>>> much more complex but it offers some essential features! The band
>>>> limiting and noise blanking will reduce the QRN very significantly! 
>>>> The
>>>> improvement can vary from a few to 10 dB, depending on the kind of
>>>> noise.  I will try to generate a new spectrogram soon, showing this 
>>>> effect.
>>>> I don't know if Argo allows noise cancelling. But if you loose say 
>>>> 6 dB
>>>> SNR, that makes a difference from invisible to O copy.
>>>>
>>>> Did you try the Twente WEB SDR link i sent you? This is also useful to
>
>>>> check if the reference signal you're using is available at present. 
>>>> I'm
>>>> daily listening to AM BCD stns for many hours a day :-)
>>>>
>>>> As said, if you like i can give you some advice how to run a DCF-plot.
>
>>>>
>>>> 73, Stefan/DK7FC
>>>>
>>>>
>
>
>
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