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Re: LF: DK7FC in VK (March 18/19)

To: [email protected]
Subject: Re: LF: DK7FC in VK (March 18/19)
From: Stefan Schäfer <[email protected]>
Date: Mon, 19 Mar 2012 03:34:52 +0100
In-reply-to: <CAKvcm2fLPCKd+FwiXuc1d72QF03zETyFC1hd1FxqALbJa8j+-Q@mail.gmail.com>
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Hi Dimitris,

Am 18.03.2012 22:58, schrieb Dimitrios Tsifakis:
Stefan, can you transmit Castle mode? That's ZL1BPU's even more
compressed QRSS... The time gain over DFCW may help with completely
capturing your call.

That mode is included in SpecLab so it would be no problem. I never used it so far. I've just done a test, generating my call in a spectrogram using your settings, see attached. That's not really nice i find. Maybe a bit more time efficient but quite confusing when signals are buried in the noise. In DFCW you know the dashes are only present on 2 frequencies. So the shift is defined. That is an additional information that becomes relevant when the characters are still not clearly detectable.
So i will go on in DFCW-180.
Let's keep the challenge and wait to the end of the week, as you say :-)
Then we can go for DFCW-120.

73, Stefan/DK7FC

Attachment: Castle.png
Description: PNG image

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