I am confused at all the negative feelings I see posted about DSP filtering.
In all my years hamming using collins mechanical filters, multipole crystal
filters and the like, I have never seen anything as good as state of the art
DSP
filters. The filters in my RX-340 are and my son's 756PRO are sharper by
an order of magnitude than anything else I have ever seen. They have no
ringing
and almost perfectly square shape factors.
I have a feeling that most of the people knocking them do not own them. Give
me a good DSP filter design over a lot of crystal or mechanical filters
anyday.
The DSP costs much less, and you usually get 30 to 50 filters. Compare that
to one filter costing $100 to $200.
Even the addition of an outboard audio DSP unit usually makes a non-DSP
radio
much better.
Carl Moreschi N4PY
Franklinton, North Carolina
n4py@earthlink.net
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