[Elecraft] K3s in WPX M/S - WOW!

Tom Childers, N5GE n5ge at n5ge.com
Mon Jun 2 15:22:38 EDT 2008


On Mon, 02 Jun 2008 07:43:47 -0700, Lyle Johnson <kk7p at wavecable.com> wrote:

>> Depending on the different bw settings it is off or on.  Additionally it 
>> toggles if you hit it one too many times.  Could we get a list of when 
>> it should be on vs. off?  Is it safe to assume that if you are at a bw 
>> smaller than a xtal filter, it should be on?
>
>I'm not sure I understand the question, but I'll attempt an answer.
>
>In any mode where a bandwidth less than 150 Hz is available, the DSP 
>will use either FIR filters or IIR filters.  If you set IIR ON by 
>tapping "7" in one of the CONDFIG:FLx menus so that "IIR ON" flashes 
>briefly in the display, then you have globally enabled IIR filtering for 
>these narrow bandwidths, regardless of mode or crystal (roofing) filter 
>in use.  If instead it flashes "IIR OFF" then you are using FIR filters 
>whenever the bandwidth is less than 150 Hz.
>
>When in the CONFIG" FLx menus, the "7" key is a toggle.  It doesn't 
>matter which crystal filter is indicated in the menu when you tap "7". 
>The setting applies to *all* filters in *all* modes which allow a 
>bandwidth of less than 150 Hz.
>
>73,
>
>Lyle KK7P
>

[snip]

Thanks Lyle!  That's just what the Doctor ordered!

Tom, N5GE - SWOT 3537 - Grid EM12jq

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