[Elecraft] 700 Hz Filter Benefit

[Ethan Miller K8GU]

Joel,

I think that this is one of those situations that if you need (want)
it, you know you need (want) it.  As you point out, a useful way to
determine the most effective roofing filters for your K3 is to see
where you keep the DSP set most of the time.  Like Don, W3FPR, writes,
I happen to find ~700 Hz to be a good bandwidth for scanning the band
(or a pileup).  I had been operating my K3 at 700 Hz DSP BW protected
by the 2.7-kHz roofing filter before I even knew about the special
filter!  I was planning to get the 1-kHz to help reduce AGC pumping
from signals farther away, but got the narrower one because I never
went above 700 Hz.  I also have the 400-Hz, which is really super for
running on a busy contest band.

I'm obviously very happy with my 700-Hz filter.  (No connection, just
a satisfied customer.)

73,

--Ethan, K8GU/3.


On Wed, Jan 22, 2014 at 5:06 PM, Joel Black <w4jbb at charter.net> wrote:
> I'm not bashing the filter, but I'm pretty happy with my 2.7 kHz and 500 Hz
> filters (main and sub receiver). What would be the benefit of the 700 Hz
> filter?
>
> BTW, if I had it to do over, I'd have gone with the 400 Hz filters as that
> seems to be where I keep the width.
>
> Thanks,
> Joel - W4JBB
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