LF: Re: DFCW an idea.

["Alberto di Bene" <dibene@usa.net>]

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