Hi Nigel:
I know that is technically and intuitively correct but I never saw a
lick of difference in ANY digi mode I have run between the old SB and
the new 24bit/192Khz cards I have. I have tried several different audio
interfaces ( I do commercial digital recording of everything from full
symphony to small groups). Only when I use the card for the SDR set up
do I see any actual operation difference.
In PSK, any station I could see as a trace would decode.
Not disagreeing at all with the argument for low noise cards but my
practical experience with the SB cards has been very good.
I suspect that, especially with the Phase modulated modes like PSK,
there are some issues with phase coherence and phase linearity thru the
system that could affect decoding. Maybe I got lucky with my two old cards.
Curt
KU8L
Nigel Gunn G8IFF/W8IFF wrote:
Although you'll copy far more station if it is high quality/low noise,
at least on the Rx side.
On 17-Sep-10 13:19, Curt Nixon wrote:
I doesn't take a high capability sound card either.
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