k3 filters and kx3
Posted by
Bruce Beford-3 on
Dec 14, 2011; 5:05pm
URL: http://elecraft.85.s1.nabble.com/k3-filters-and-kx3-tp7094236.html
Technically true, Terry. I perhaps oversimplified my response to the
inquiry. "Baseband" can mean different things to different people.
However, the answer to the question remains correct. - "No, you cannot
use the K3 filters in the KX3." I will leave further amplification to
Wayne or Eric.
73,
Bruce, N1RX
On Wed, 14 Dec 2011 08:51:15 -0500, Terry Posey <
[hidden email]> wrote:
The Elecraft KX3 architects should weigh in on this topic - a simplified
> block diagram would be helpful. The KX3 roofing filter is likely a analogue
> filter realized with precision op amps and operating at the KX3
> low-frequency IF (11 KHz?) - not "baseband". The roofing filter is applied
> prior to the ADC and DSP, and not at baseband audio frequencies, else it
> would not be roofing filter, but merely a post audio filter.
>
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