[Elecraft] K3 6KHz Filter and Data Modes

[Matt VK2RQ]

But what about the bandwidth on the TX side? Can you use DATA mode, or perhaps use ESSB wide SSB?

73, Matt VK2RQ

On 02/09/2013, at 2:53 AM, "Joe Subich, W4TV" <lists at subich.com> wrote:

> 
> There is a 4.2 KHz lowpass filter in the audio chain to the headphones
> and speaker but it is not present on the "Line Out".  I regularly use
> the FM (13 KHz) IF filter for WSJT-X and see 200 - 4200 Hz when the
> DSP is adjusted correctly.
> 
> 
> 73,
> 
>   ... Joe, W4TV
> 
> 
> On 9/1/2013 11:49 AM, Bob wrote:
>> Hey,
>> 
>> My widest filter is currently a 2.8 KHz on the main board.  If I understand
>> things correctly, if I shift all the filters over a spot, then pop in a
>> 6KHz AM filter for FL1, I can use that for TX and RX Data modes.
>> 
>> The reason I ask is that the WSJT-X program is now supporting a full 4KHz
>> wide waterfall that allows both JT65 and Jt9 QSOs.  With my current filter
>> I can clearly see the upper end cuts off around 2900 Hz.
>> 
>> So my question is would there be anything else in the audio or DSP chain
>> that would prevent me from using the full 4KHz of WSJT-X while in DATA
>> modes if I have a wider filter in slot FL1?
>> 
>> Thanks in advance,
>> 
>> 73, Bob, WB4SON
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