[Elecraft] Filter Selection

[Matt Zilmer]

I doubt a consensus would ever develop over such a contentious issue,
but let's try for a reasonable compromise.

This is a plan, not that it's perfected yet -

2.7 KHz is already in the K3 and has proven quite workable under most
CW/SSB conditions.

500 Hz looks effective enough and, as with other filters, will be
augmented in effect by the DSP's capabilities.

6 KHz FM filter would cover all wideband and general purpose SWL stuff
(with the KBPF3).

I'd add the 1.8 or 2.1 KHz filter for contesting too.   Good thought.
For me - later.

The saving grace is the DSP.  Damn - that *perfects* the best HF RX
around, imho.  You are quite right about that....

:)

matt, WA6EGJ
K3 s/n 24


On Fri, 16 Nov 2007 21:32:28 -0500 (EST), you wrote:

>Wondering if a consensus was developing about  the choice of roofing filters. 
> Seems like there a too many to choose from.  Lacking detailed plots for each 
>one, I can't believe there is that much  difference between say a 500hz 5 
>pole and a 400hz 8 pole or a 200 hz 5 pole vs a  250 hz 8 pole.  Sure the 5 poles 
>will have wider skirts but will you be  able to hear the difference?  
>
>I would think the 500hz 5 pole would  be fine for CW and the stock 2.7 would 
>be fine for SSB.  Maybe add the 1.8  if you do a lot of SSB contesting.    I 
>have an Orion so I am  used to roofing filters - they are a dramatic 
>improvement over the wide open  front ends of the YaeComWoods but you don't need to go 
>crazy with multiple  filters since the DSP does all the work and the roofing 
>filters only make a  difference in really crowded conditions. 
>
>Comments?
>
>k4ia
>Craig  "Buck"
>Fredericksburg, Virginia USA  
>
>
>
>
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