[Elecraft] k3 filters and kx3

[Terry Posey]

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.

Terry K4RX 


No, the KX3 roofing filter module is completely different. It works at
"baseband" frequencies, rather than the 8+ MHz IF that the K3 uses. You will
not be able to use K3 filters in the KX3.

Bruce, N1RX

> Can the K3 roofing filters be used in KX3 ?

> Adi
> 2E0TTX