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LF: Re: DFCW an idea.

To: [email protected]
Subject: LF: Re: DFCW an idea.
From: "Alberto di Bene" <[email protected]>
Date: Fri, 27 Apr 2001 20:58:19 +0200
References: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
Rik Strobbe wrote:

[snip]
The most recent version of QRS supports 'time synchronisation'. I am not a
specialist in DSP stuff, but my 'intuition' says that the knowledge of the
exact start/stop time of a dot can be used to improve SNR.

73, Rik  ON7YD
The ideal way would be to know the exact time (i.e. phase) and frequency of
the audio tone, so that to implement a matched filter, but this requires
IMHO a Rubidium standard at least, an item not commonly found in the average
OM shack (not in mine anyway).

73  Alberto  I2PHD


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