[Elecraft] Filters for K3

[Jim Miller KG0KP]

There is a big difference between the 200 (actually 224) and the 250 
(actually 370) and very little diffference between the 250 and the 400 
(actually 435).  My selection was for the 250 and I am very happy with it 
and actually see the 200 as being RARELY used if at all.  It is narrow 
enough that if the responding cw station is off frequency, you will NOT hear 
them at all.  I intend to add the 500 filter (actually 565) next.

Before you buy the 1.8, set your DSP to 1.8 and spend some time listening at 
that width to see if you like it compared to the DSP setting of 2.1 to 
decide between those two filters.

2.7, 1.8, 500, 250 and someday may also add a 1.0 filter.  I may also have 
to swap out my 1.8 for a 2.1 because of my damaged hearing.

73, de JIm KG0KP


----- Original Message ----- 
From: "DM4iM" <hamradio at vr-web.de>
To: <elecraft at mailman.qth.net>
Sent: Monday, December 28, 2009 2:24 PM
Subject: Re: [Elecraft] Filters for K3


> Elecrafters, thanks for all the input.
> I had many replies, personal mail or via the reflector.
>
> To sum it up:
>
> Matched filters are important for diversity.
>
> 8 votes for the 1.8khz, 4 for the 2.1 ssb filter for contesting.
> Some use the 1.8khz ssb filter for cw, with the dsp set to narrower
> bandwith. I think i will order one of those, it makes sense to use it
> for cw-operation on a quiet band and in ssb contests when things get 
> rough.
>
> The 200hz and 250hz cw filters got an equal number of votes, you left me
> alone on this  ;-)
>
> The expense on 2 matched 5 pole or 2 8-pole filters is about the same,
> so the criteria here is performance.
>
> May i call for a run-off?
>
> Thanks to all es HNY
>
> Martin
>
> -- 
>
> 73, DM4iM
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