[Elecraft] K3 & ADAT ADT-200A by HB9CBU

[Kok Chen]

On Monday, December 01, 2008, at 01:16PM, "Bill W4ZV" <btippett at alum.mit.edu> wrote:

>...which is why the hybrid approach of a narrow roofing filter before the
>ADC works so well in Orion and the K3.  

Bill is correct.

Think of this this way: the clipping level of a codec does not change, but the noise floor of the processed passband falls.

You gain nothing anymore only after the Nyquist rate of the signal of interest has exceeded (think energy density) the decimated sampling rate.

73
Chen, W7AY