[K3]Noise Filter (NF) ADJ

[Papabravo]

When you HOLD the NF button you get an adjustment feature which changes the properties of the NF with a cryptic nomenclature, e.g.
F1-1
F1-2

Is there some meaning that can be assigned to these two digit codes?  The first digit appears to be in the range [1..8] and the second digit appears to be in the range [1..4]

[wa9fvp]

There's no documentation but as far as I can tell--

F1-x through F4-x defines the amount of noise reduction or how aggressive the filter attacks the I.F. noise.  F5-X through F8-X defines the amount of reduction and the level that's mixed with the filtered and non-filtered I.F.  Note that "m" which means "mix" will appear after F5-X and above.

X defines the delay.  Delay is the amount of time it takes for the filter to converge on a non-sinusoidal signal or the noise.   The higher the number, the longer it takes for the noise to reduce to a low level.    

I hope this helps.

Jack WA9FVP