[Elecraft] [K3] Filters for mixed JT65 and JT9 HF

Joe Subich, W4TV lists at subich.com
Mon Oct 7 16:36:29 EDT 2013


 > Yes I can transmit using the split options. For 2 reasons I would like
 > different approach with a wideband TX.

Unfortunately the K3 *can not* do "wideband TX" ... the DSP modulator
is limited to 200 - 2800 Hz when in DATA mode.  There is no alternative
as ESSB modulation is not supported in DATA mode - regardless of which
filters are installed.

 > First of all I am interfacing through HRD. That way the split are not
 > implemented to my understanding.

Then you need to put pressure on the developers of HRD to fix the
problems with split so it operates correctly.

The alternative is to use "narrow band" with WSJT-X - disable "split" 
(untick "Split TX" in Config) and leave the default frequencies as they
are for JT65A.  Then click the +2 KHz box to QSY both transmit and
receive up 2 KHz for JT9.  It is possible to monitor the entire 4 KHz
in "wideband" receive then simply select +2 KHz to QSY when operating
JT9.

73,

    ... Joe, W4TV


On 10/7/2013 4:11 PM, Michael Jensen wrote:
> Hi
>
> Thanks for the reply
>
> Yes I can transmit using the split options. For 2 reasons I would like
> different approach with a wideband TX.
>
> First of all I am interfacing through HRD. That way the split are not
> implemented to my understanding.
> Then I really like to know exactly where i transmit. Using the split the
> only indication I get is that the frequency in the b VFO. But i am not able
> to see if i am actually doing TX on A or B VFO during a TX cycle.
>
>
> 73 de OZ1BZJ
>
> Michael
>
>
>
> --
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