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Hi Domenico,
There are a few configurations available in SL itself (in the
'Quick Settings' menu under 'Slow Morse Reception / QRSS', and on
Stefan's (or was it Markus' ?) site.
Quite important (for FFT frequency bin widths in the milli- or
microhertz range) is the continuous calibration of the sampling
rate, because with a normal off-the-self soundcard the sampling
rate is not stable enough, resulting in the signal energy being
spread across several FFT bins. There are some notes on the
possible calibration / drift compensation options in the help
system. For details, I suggest to discuss the subject in the
spectrum lab user group at yahoo.
To run a grabber, you will need a command-line-driven FTP utility,
or some other tool which periodically uploads the screenshots to a
website / dropbox / etc . There is no FTP client built inside SL.
Best regards,
Wolf DL4YHF .
Am 04.12.2013 15:58, schrieb STEM - Putignano (BA):
Hi all DR OM
i want to test this band and i'm looking to activate a grabber.
Someone of you can provide me a suitable .usr file for
Spectrum Lab for a 9k grabber ?
I have already downloaded the sw and i want to say a big thanks to
DL9YHF for his super job.
73, Domenico/iz7slz
Hi Graham, Stefan and Markus,
sri, the TX is still off. Too wet here around
Yes, Stefan, your grabber rcvd the emissions completely.
Graham, I think you mean my equipment. It’s
a resonant Marconi design excited by a field winding totally
isolated from it. It is tuned by moving one coil into the
other or vv. Makes abt 3,5km coil wire, 17m
vertical and 300m top wire sloping down to abt 10m. All
1,7mm Litze.
GL
Uwe/dj8wx jo43sv
Von: [email protected]
Gesendet: 03.12.2013 00:14
An: [email protected]
Betreff: Re: Re: Re: LF: 8970,022Hz
Uwe,
Do you have any info on the tuner/matching system
?
Tnx -G,
Sent: Sunday, December 01, 2013 4:30
PM
Subject: Re: Re: Re: LF: 8970,022Hz
Hi all,
the TX was off from 1348UTC until 1534UTC. I had to
repair the antenna.
One of the top load wires came down. The ribbon
behind the isolator changed to coal
(corona effect during rain periods).
Tks for reports.
Sri for the QRM, Markus.
GL
Uwe/dj8wx jo43sv
Von: [email protected]
Gesendet: 01.12.2013 14:12
An: [email protected]
Betreff: Re: Re: LF: 8970,022Hz
Hi
Uwe,
no luck
here so far. The primary reason seems to be a slightly
unstable QRM line centered on 8970.3 Hz, probably one of
many emitted by the railway line 400 m away (see lower
part of grabber window). For me, eg.
0.2 Hz lower would be a clear frequency. But as QSY from
your side would imply reparking all the other grabbers,
I guess I'll just have to live with it for the time
being. Will keep on trying anyway...
Best 73,
Markus (DF6NM)
Sent: Friday, November 29, 2013
1:37 PM
Subject: Re: Re: LF: 8970,022Hz
The
DARC homepage server and ftp access procedure have
recently been modified. I've restarted the
temporary VLF grabber at
Good luck!
73, Markus (DF6NM)
Sent: Friday, November 29, 2013
12:04 PM
Subject: Re: Re: LF: 8970,022Hz
Hi Markus, Jim, Laurence and Eddie,
on the air agn since 1043UTC. it
will stay so the coming hours. tomorrow the same
procedure as today.
mom it is raining.
yes, Markus, it is the same ant and
the same pwr (a new DJ 4kW-PA, output reduced to
500W). and no, I don’t know what it is at -38mHz. Paul
will know, I guess.what abt ur
grabber? new URL?
GL
Uwe/dj8wx jo43sv
Von: [email protected]
Gesendet: 29.11.2013 10:16
An: [email protected]
Betreff: Re: LF: 8970,022Hz
Wonderful news Uwe
I had to abandon the attempt to find you last night as my
storage battery failed. :-(
This morning using Solar Power my RX is just up and
producing the first display.
I assume you are still on as I have peak at 9870.022Hz. In
424uhz, the 47uhz window is not ready yet.
http://www.g3zjo.talktalk.net/vlfgrabber.htm
Now for some battery work down in a cold shed so i can
continue after dark.
73 Eddie G3ZJO
On 28/11/2013 18:37, [email protected]
wrote:
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