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

[wayne burdick]

>>  * IF A 2.8 KHZ FILTER IS INSTALLED, SSB "NORM" BW is 2.8 kHz
>> (was fixed at 2.7 kHz).
>
> Can this be extended to CW and Data?  It appears that "NORM" is
> currently fixed at 400 Hz regardless of mode and filter.  500 Hz
> would be more appropriate for CW with the 500 Hz crystal filter
> and even wider values might be appropriate for some DATA A modes
> with a 1000 Hz or 1.8 KHz filter.

Added to the list -- thanks.

>
>>    * 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.


>
>>    * SSB TRANSMIT BANDPASS EXTENDED AT LOW END. Improvement
>> is about 2 dB at 300 Hz, 3 dB at 200 Hz, and 6 dB at 100 Hz.
>
> Can this be made optional?  Excess LF response only wastes
> power at low frequencies and occupies excess bandwidth.

We could add a menu entry for this -- it's on the list. Meanwhile, the 
low end is rolled off a bit in hardware, too, so in practice I don't 
think you'll have any problems with this.


>
>> 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.

Per-mode settings are on the list, too.

tnx
Wayne
N6KR


>
> 73,
>
>    ... Joe, W4TV
>
>
>
>

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