[Elecraft] KAF2 or KDSP2 for K2?

[Don Wilhelm]

John,

The IF filter response of the K2 filter can be quite good by itself, but 
cascaded filters are better, particularly the DSP straight sided filter 
responses.  To optimize the IF filters, I would encourage all to use 
Spectrogram (or something equal) and a wideand noise generator ( or 
atmospheric band noise on a dead band) to determine the actual width and 
positioning of each filter.  See part 3 of the K2 Dial Calibration 
article on my website www;.w3fpr.com for more information.

I would like to point out that most K2 filters are not set for optimum 
response - the settings in the manual will produce working filters, but 
certainly not optimum.  I have described the process for achieving not 
only good dial calibration, but also good filter response in the K2 Dial 
Calibration article on my website www.w3fpr.com.

73,
Don W3FPR

On 5/1/2012 7:46 PM, John wrote:
> One question I have about the choice between the KAF2 and KDSP2 is what
> about having neither.
>
> How would one describe the receiver/filter capabilities of the bare K2?
>
>