K3 Filter question

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K3 Filter question

Jeff Wandling W7BRS

I misunderstood the previous thread on matched filters.

When I receive the KRX3 after assembling the K3, do I worry about the
stock filters on the K3/100 and KRX3 being mis-matched?  Does it matter?

If it doesn't make that much difference for general use, then that's all
I'm wondering.

I'm not a QST lab type station.

-jeff
W7BRS

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Re: K3 Filter question

Don Wilhelm-4
Jeff,

If and only if you are doing diversity receive, then the mismatched
filters would be noticeable.  If they are not far apart, you can 'cheat'
a little on the filter offsets - set both of them the same (to the
average of the two offsets) and you are not likely to notice.
If you have the narrow filters, then the effect of this compromise will
be worse, but you stated that you had only the stock filters, so there
will not be much difference for the 2.7 kHz filters.  A few Hz one way
or another does not have much impact on a 2.7 kHz bandpass, but it can
be a worse problem with a 200 Hz bandpass.

If you are not doing diversity receive, I do not think you will notice a
difference even with the narrow filters.

73,
Don W3FPR

Jeff Wandling W7BRS wrote:

>
> I misunderstood the previous thread on matched filters.
>
> When I receive the KRX3 after assembling the K3, do I worry about the
> stock filters on the K3/100 and KRX3 being mis-matched?  Does it matter?
>
> If it doesn't make that much difference for general use, then that's
> all I'm wondering.
>
> I'm not a QST lab type station.
>
> -jeff
> W7BRS
>
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