On 8/19/2013 7:21 AM, Arie Kleingeld PA3A wrote:
The K3 has enough software and also in the filtering, but it depends
HEAVILY on the analog IF filtering.
It is a combination, that's why I call it a hybrid.
Consider for a moment an SDR with no analog filtering at all.
How wide would the passband be? Are we going to cover everything from
MF to 6m?
The A-D converter is going to have to convert everything coming in, and
the DSP is going to have to sort out what you want out of everything
coming in: broadcast, other services, noise 50 MHz wide, and who knows
what else.
I'd rather have the DSP concentrate on a smaller bandwidth signal, and
have the processing power available for the few MHz I care about at any
given time.
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