[Elecraft] K3 NR

[Bob Cunnings]

Is it still the case that the interpretation of the NR parameters is
as described in the K3 manual (D4)?

The manual states:

"The second
part (-y) controls how much of the signal is routed
through noise reduction, from 1 (50%) to 4 (100%)"

If so I'm confused by the identities:

> The 3.27 NR F3-1 is *identical* to 3.25 NR F1-4.
> The 3.27 NR F3-2 is *identical* to 3.25 NR F2-4.
> The 3.27 NR F3-3 is *identical* to 3.25 NR F3-4.
> The 3.27 NR F3-4 is *identical* to 3.25 NR F4-4.

where F-1, -2 etc. are asserted to be identical to Fx-4.

Has the scheme changed?

Bob NW8L

On Tue, Aug 25, 2009 at 9:40 PM, Lyle Johnson<kk7p at wavecable.com> wrote:
>> Well the SSB folks lose out yet again on the latest FW revision.
>> Just when the next to useless NR was made to work we have yet
>> another version that favours one mode over others.
>
> The 3.27 NR F3-1 is *identical* to 3.25 NR F1-4.
> The 3.27 NR F3-2 is *identical* to 3.25 NR F2-4.
> The 3.27 NR F3-3 is *identical* to 3.25 NR F3-4.
> The 3.27 NR F3-4 is *identical* to 3.25 NR F4-4.
>
> The 3.27 NR F1- is "lighter" than the 3.25 NR.
> The 3.27 NR F2- is a little lighter than the 3.25 NR.
> The 3.27 NR F4- is "heavier" than the 3.25 NR.
>
> I am an SSB op, not a CW op, and the NR now works much better for me.
>
> There were some changes we had to make from 3.25 (and previous releases
> as well) in the Fx-1, -2 and -3 settings which resulted in "scolloping"
> of the passband.  Some CW ops at certain pitches thought it gave their
> signals a boost, others at other pitches really bemoaned the
> attenuation.  While less noticeable on SSB, it was there nonetheless.
>
> 73,
>
> Lyle KK7P
>
> (aka Not Sleeping Mt Vernon)
>
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