[Elecraft] K3 FIRMWARE UPDATE: MCU 1.87, DSP 1.69 (Finally!)

[Joe Subich, W4TV]

> >>    * AUTO-SPOT (SPOT with CWT ON) now works with both very
> >> weak and very strong signals.
> >
> > Auto-spot consistently tunes to a tone 50 Hz low (50 Hz below
> > the value set for pitch).
> 
> I can't duplicate this. I tried various sidetone pitches and 
> found that auto-spot got to within a few Hz every time. What 
> sidetone pitch are you using? I suppose some kind of band noise 
> could interfere with the operation of CWT as well.

I first noticed it with a CW pitch of 600 Hz.  The auto spot will 
eventually "zero in" after three or four tries but my ear is more 
accurate than the auto-spot.  It may be band noise or simply timing 
out between CW characters because it is always accurate with a 
continuous tone (e.g. XG-2). 

> >
> >> Additional improvement possible via TX EQ.
> >
> > Will TX EQ be made mode and/or input dependent?  Setting TX EQ
> > for voice screws up the audio response for digital mode (AFSK A
> > and DATA A) operation.  The same is true for RX EQ.
> 
> I believe both RX and TX EQ are bypassed in DATA modes. If not, they 
> should be. I'll mention this to Lyle.

I would hope so but that does not seem to be the case with RX EQ.  
When I set up the RX EQ to help a little with the high end in AM 
(band 7 = +2, Band 8 = +4), I see the tilt in AFSK A and DATA A.  
It's obvious since EQ "band 7" is just slightly higher than the 
standard 2295 Hz space in RTTY and results is an obvious level 
difference between mark and space tones. 
 
> Per-mode settings are on the list, too.
 
That will be helpful.  

73, 

   ... Joe, W4TV