[Elecraft] Data A filter questions

[Joe Subich, W4TV]

Wes,

> Here is a clue for the guys I hope start looking into this. I cannot
 > toggle filter modes in CW either *if PB CTRL is set to .01, but can
 > toggle if PB CTRL is set to .05.*

That is correct operation.  If PB CTRL = .01, HI/LO is disabled.  You
will find that information in the firmware release notes when the 10 Hz
step was first released (MCU 3.25/DSP 2.21).

   "Applies to CW and DATA only; LOCUT/HICUT cannot be used when 10 HZ
    shift steps are in effect; Width steps remain 50 Hz in all cases"

As to your 400 Hz filter, that is the default in all data modes.  The
width can be changed easily by using the "Width" knob or pressing XFIL
to select the 2800 Hz roofing filter ...  I program the PSK start-up
macro in DXLab Suite/WinWarbler to set the bandwidth to 2800 Hz when
ever the mode is set to PSK (or the K3 is set to DATA A).

73,

    ... Joe, W4TV


On 12/16/2010 10:58 PM, Wes Stewart wrote:
> Don,
>
> Yes, in SSB I can toggle between Shift/Width to Lo/Hi.
>
> In data modes I cannot.  I never paid attention to AFSK A before since I use 915 Hz for Mark and I never found it necessary to change the default shift of 1 KHz or to toggle to Lo/Hi.
>
> Here is a clue for the guys I hope start looking into this.  I cannot toggle filter modes in CW either *if PB CTRL is set to .01, but can toggle if PB CTRL is set to .05.*
>
> Unfortunately, this isn't a fix for the data modes.
>
> Wes  N7WS
>
> --- On Thu, 12/16/10, Don Wilhelm<w3fpr at embarqmail.com>  wrote:
>
>>    Wes,
>>
>> Can you toggle between HI/LO and SHIFT/WIDTH when in SSB
>> mode?
>> I can shift between the two in all data modes except FSK D
>> where they
>> stay in SHIFT/WIDTH.
>>
>> Just wondering if your K3 is broken.
>>
>> 73,
>> Don W3FPR
>>
>> On 12/16/2010 3:29 PM, Wes Stewart wrote:
>>> Don, and I'll reply to Monty here too,
>>>
>>> There is no question that I'm in Data A and my HI and
>> LO controls do not function.  I seldom use PSK, I
>> prefer RTTY, but I'm sure that this didn't happen in the
>> past.  Just for giggles I rolled back my firmware to
>> 4.0 sumptin' and I had the same issue.
>>>
>>> I generally leave the VFO set for example to 14.070
>> and click tune on the waterfall, but use HI and LO cut to
>> select the signal of interest.  As it stands the SHIFT
>> range is so limited that I can't isolate lower tones.
>>>
>>> Wes
>
>
>
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