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> where are
you? :-)
... 20 Hz above you ;-)
Yesterday I finally got WSPR 2.11 working in
IQ-mode with the FiFi-SDR on MF. Today I changed back to LF (which is
0.1355 MHz dial and 2000 Hz BFO here) and got fine decodes, but no uploads, with
a persistant error message "frequency changed no upload of spots".
Tried all sorts of different settings (which is time consuming) but didn't
succeed - anyone out there who has seen and solved this? Now back to
WSPR 2.0 with same parameters, running just fine.
Yesterday one neighbour had a nearby large pine
tree chopped off, and now I find my antenna current boosted from 3.4 to 4.1
amps!
Frequent DF6NM grabber watchers
are probably familiar with a QRM line which appeared on 136.9 kHz same hours
each day. A portable RX pointed towards a source in one other
neighbour's house, and last weekend I finally found the courage to knock on
their door. When I mentioned the regular on and off times, my
neighbour identified the flourescent lights of her fish tank! She allowed me to
fix it, and I found a chopper based on a "smart controller" chip (Infineon
ICB1FL02G), running at 45.6 kHz fundamental. Changing a frequency-setting
resistor to push the beast to 41.5 kHz, plus retrofitting a three-wire cable and
plug, cleared this one for good.
Best 73,
Markus (DF6NM)
Sent: Tuesday, October 16, 2012 7:46 PM
Subject: Re: LF: WSPR on LF
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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