[Elecraft] K3 Receiver mush

[Don Wilhelm]

That is a very good list to combat crowded band conditions and allow 
copy of weak signals near stronger signals.

For the last few items on that list, you may want to consider 
alternatives for selecting the filters and the use of SHIFT.  It is a 
matter of "operating style" - I know Bob is comfortable with his, but I 
would like to present something a bit different for those not yet 
'ingrained' in their operating habits.

If you use the SHIFT and WIDTH knobs in CW, the filters will change as 
you move the WIDTH knob - this is an alternative to using the XFIL 
button.  Only seldom do you have touch the shift, but it may be handy 
for moving an offending signal out of the passband.  Normally SHIFT 
would be set to your preferred sidetone pitch.

For SSB, tap the SHIFT or WIDTH knob to get the LO CUT/HI Cut LEDs to 
illuminate - then you can narrow the passband with the LO CUT and HI CUT 
knobs - no need to change the SHIFT for pleasing audio, it will happen 
automatically.

You cannot cut the LO end drastically (only up to about 550Hz) before 
the signal intelligibility is affected, but you can cut the HI end 
substantially (down to about 1500Hz) before the signal becomes unreadable.

I find this method much easier than fiddling with the SHIFT in SSB and 
the XFIL button.  I never touch the XFIL button, the filters follow the 
width of the DSP no matter what the mode.

73,
Don W3FPR



On 2/24/2017 1:54 PM, Jim Brown wrote:
> On Thu,2/23/2017 6:32 PM, Bob Wilson, N6TV wrote:
>
> 2.8 kHz 8-pole filter on SSB (1.8 8-pole when bands crowded, *must move
> IF SHIFT lower for pleasing audio*)
>
> Use *XFIL* button to toggle between filters and reset the IF shift,
> rather than NOR (hold) button
>