Hi Peter,
Try to active the samplerate detector. Choose the MSK demodulator
algorithm and try to lock on GBZ 19.58 kHz. This transmitter is a fine
reference. The German transmitter makes a coffee break each morning and
may not be optimal for that.
Note that it takes quite a long time in these very slow modes until the
first pixel appears on the screen.
Also you may run different instances of SL simultaneously, to check
different things...
It could be helpful to resonate your antenna to 9 kHz with a low Q fixed
inductor, 1 mH or so, to reduce the out of band signals.
73, Stefan/DK7FC
Am 09.03.2012 23:35, schrieb PA1SDB, Peter:
O.K. Stefan,
I did finetune the Spectrum lab setting a bit.
I have no reference....
Antenna is just a 30 mb dipole direct into the soundcard.
Well... perhaps I'm a bit to optimistic...
Let's see what happens.
Best 73's, Peter - PA1SDB
http://home.deds.nl/~knol/
http://home.deds.nl/~knol/dream.jpg
----- Original Message ----- From: "Stefan Schäfer"
<[email protected]>
To: <[email protected]>
Sent: Friday, March 09, 2012 10:12 PM
Subject: Re: LF: Re: VLF transmission 10.3.2012
Hi Peter,
Interesting. What is your setup for VLF?
I think if you plan to see Gerhard tomorrow you must at least choose
a FFT bin width below 1 mHz and 1 pixel per FFT bin. Also it is
essential to be locked to a refernece.
A long story and not so easy to tell in 2 sentences :-)
73, GL, Stefan
Am 09.03.2012 23:06, schrieb PA1SDB, Peter:
O.K. Gerhard and Stefan,
It's clear now.
I'm new here and learing day by day :-)
73's, and succes.
BTW: RX is QRV here...
http://home.deds.nl/~knol/dream.jpg
Peter, PA1SDB
----- Original Message ----- From: "Gerhard Hickl"
<[email protected]>
To: <[email protected]>
Sent: Friday, March 09, 2012 8:43 PM
Subject: Re: LF: Re: VLF transmission 10.3.2012
Peter!
Never mind!
As Stefan has already explained, "VLF" in this context means lower
than
9khz. I will not tell the exact QRG but it will be very close to 8970,
of course. Some mHz below or above.
73
OE3GHB
Gerhard
Am Freitag, den 09.03.2012, 19:57 +0000 schrieb PA1SDB, Peter:
Sorry, but what frequency ?
9, 137, 500 Khz ?
----- Original Message ----- From: "Gerhard Hickl"
<[email protected]>
To: <[email protected]>
Sent: Friday, March 09, 2012 7:42 PM
Subject: LF: VLF transmission 10.3.2012
> Dear group!
>
> The weather forecast for tomorrow looks promising. Only weak
wind to
> expect here.
>
> This gives me another chance to transmit on VLF tomorrow. If
everything
> goes well, I will start around 800z.
>
> I know this another short announcement but until about two hours
ago it
> was unclear if I have to work tomorrow. Luckily I don't have
to.....
>
> 73
> OE3GHB
> Gerhard
>
>
>
>
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