[Elecraft] What CW Filters do others have

[Joe Subich, W4TV]

> I am curious to hear opinions of others who have used the 8 pole
> 400hz filter and the  5 pole 500hz filter.

Having used both, I can't tell much, if any, difference in normal
CW operation.  There are perhaps three advantages to the 400 Hz
filter:

1) it is nominally zero offset - if you plan to get the KRX3
    you will not need to be concerned about matching offsets
    in the second filter at a later date.
2) The nominally tighter bandwidth and steeper skirts are very
    handy RTTY and avoid the need to a tighter RTTY filter
3) The steeper skirts provide slightly more protection against
    AGC pumping from the behemoth +/- 500 Hz away.  This is
    probably something one will not encounter outside a contest
    and I've found more problems with "dirty signals" (clicks)
    than with AGC plumping.  The filter isn't going to resolve
    clicks!

Both my K3/KRX3s now have a pair of the 400 Hz filters with a
single 200 Hz filter in the main Rx if I need anything tighter.

73,

    ... Joe, W4TV


On 1/5/2013 1:36 PM, ac8jd wrote:
> I am ready to pull the trigger on a CW filter for my K3.  I am curious to
> hear opinions of others who have used the 8 pole 400hz filter and the 5 pole
> 500hz filter.  I am not a contester by any means so this is for casual CW
> operating.
>
> All thoughts and opinions are welcome!
>
> Thanks!
> AC8JD
>
>
>
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