[Elecraft] K3 CW Rx Audio

[Don Wilhelm]

John,

I have only the stock 2.7k filter in my K3, and in either CW or SSB 
mode, I can dial a bandwidth in excess of 2.8 kHz.  It should work the 
same way even if the narrow filters are installed - the filter selected 
automatically follows the DSP bandwidth.

73,
Don W3FPR

John Unger wrote:
> I'm still waiting for my K3, but...
>
> I guess from the fact that you went through these gyrations means that 
> one can't simply set the roofing filtering selection on "auto" and 
> dial in a DSP width of 2700 Hz., e.g., or whatever with a K3 and have 
> the 2700 Hz. SSB filter as the roofing filter; like I can with my Orion?
>
> What am I missing?
>
>
> 73 - John, W4AU
>
> At 04:56 PM 4/20/2008, you wrote:
>> I tried something last night that may be of interest to some CW ops. 
>> Although most of us are always in search of ways to narrow CW 
>> bandwidth, there are times when listening to CW is made more 
>> enjoyable when the receiver is allowed to open up a bit, especially 
>> with AFX activated.
>>
>> In order to engage in wideband CW reception with the wider crystal 
>> and DSP filters, press SPLIT, then A=>B.  Set VFO A for either LSB or 
>> USB.  Then, set VFO B to CW.  Next, press and hold the SUB button to 
>> link VFO A with VFO B.  The CW offset can be made to match the 
>> sidetone frequency by setting VFO A and B to slightly different 
>> frequencies (difference being the side-tone frequency).  I stored my 
>> settings into memory so I don't have to go through all the gyrations 
>> next time.  With this approach, the rig is transmitting CW on VFO B, 
>> but listening in either LSB or USB on VFO A.
>>
>> It's important to set the Rx frequency on VFO A up by the offset 
>> amount (e.g., 600 Hz) for CW LSB receive, and down by the offset 
>> amount for CW USB receive.  My tests show that QSK performance 
>> remains super-fast and is not affected with this procedure.
>>
>> Paul
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