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Re: LF: Signals for RA9MB

To: [email protected]
Subject: Re: LF: Signals for RA9MB
From: "Alexander S. Yurkov" <[email protected]>
Date: Fri, 28 Jan 2005 01:38:41 +0000 (GMT)
In-reply-to: <[email protected]>
Reply-to: [email protected]
Sender: [email protected]

On Thu, 27 Jan 2005 [email protected] wrote:

Trying to add in another signal for you, I am planning to beacon in QRSS 60 mode from 17:30 today on 137715.0, exactly 5 Hz above Gus.

Oh, Markus, not tonight! I have not sleep 3 nights :-) May be ysterday or
few days later... Local time is 01-00 (GMT+6).

I am not quite sure about the time and frequency scales of your waterfall screenshots. I understand your FFT has 0.13 Hz resolution, is this reproduced in the image as 1 pixel per FFT bin?

1 pixels per 3 times of FFT. 0.13 Hz is a mistake, 8 sec FFT yelds 0.25 Hz
total up and down. 0.13 is a halfwidth.

Just see Gus with 1 pixel per FFT. 3 times averagin is better :-)

And what is the reason for the fine vertical
grid? It seems that the (incoherent?) averaging is now set to 24 s/pixel.

Yes, 3 times averaging yelds 24 s/pixel.

Is
there no temporal overlap between consecutive FFT windows?

I am not sure. Seems there is not.


73 de RA9MB/Alex
http://www.qsl.net/ra9mb




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