[Elecraft] K3 Receiver mush

[Gordon LaPoint]

Dave,
     I do lots of rtty contesting.  I have found the 400Hz filter to be 
just right for rtty.  The 250 is too narrow.  I then narrow the DSP 
filter to 300Hz if needed, with the 400Hz Xtal filter in front.
Gordon - N1MGO

On 02/21/2017 06:27 PM, Dave Fugleberg wrote:
> Don, that's a great explanation. I came to the same conclusion in a recent
> RTTY contest. I built my K3 with the single stock filter based on advice
> from a number of folks to 'just operate for awhile til you get the feel for
> what other filters you need'. I think that's sound advice.
> Anyhow, I've been generally ok with the standard filter and relying on DSP
> filtering to narrow it as needed. However, in the RTTY contest, I often had
> issues working weaker stations when strong ones were very close by. It was
> easy to see what was going on by watching the P3- I'd start copying a
> signal inside the DSP bandwidth, and a strong one would pop up just above
> or below that station. Even though I couldn't hear the strong station, the
> weak one would go nearly silent as the AGC kicked in due to the strong
> signal in the IF passband.
> So, I think I've learned that I need a narrower filter for such situations.
> I'm thinking a 400hz filter is what I want. Any reason for a different
> selection in that scenario?
> 73 de W0ZF
> On Tue, Feb 21, 2017 at 8:52 AM Don Wilhelm <donwilh at embarqmail.com> wrote:
>
>


-- 
Gordon - N1MGO