Data mode shows 600hz BW on P3

[Jim Shepherd]

When I switch to DATA mode, the receive bandwidth is only about 600 Hz even
though when I check with Data MD it shows the USB mode. I have the 2.8
filter selected and it shows on the display and using the K3 Utility
program. The audio also shows that there is only 600 Hz bandwidth. When I
switch back to USB mode, everything is working at 2.8 kHz. The highlighted
segment on the P3 showing bandwidth also confirms the two different
bandwidths, and WSJT-X also shows the decreased bandwidth in the DATA mode
and does not decode signals outside of that BW even if they are huge on the
fo P3.  I can't find anything about changing the RX bandwidth in DATA mode
in the manual...

TNX
Jim
W6US

<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon>
Virus-free.
www.avast.com
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Don Wilhelm]

Jim,

Yes, the filter width in DATA A mode defaults to a narrow bandwidth -
even though you have the 2.8kHz filter, it still defaults to a narrow
bandwidth like 400 or 600 Hz (I can't recall which).
That is an aid to those who choose to use the VFO dial to tune in a
single data mode station.

SSB mode defaults to the 2.8kHz.

Not to worry, it is easy to change, just grab the WIDTH knob and turn it
until you see a waterfall width to your liking.

73,
Don W3FPR

On 10/6/2017 6:28 PM, Jim Shepherd wrote:
> When I switch to DATA mode, the receive bandwidth is only about 600 Hz even
> though when I check with Data MD it shows the USB mode. I have the 2.8
> filter selected and it shows on the display and using the K3 Utility
> program.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Jim Shepherd]

Thanks for the help--Bandwidth was showing full on the screen on the K3s,
but when I hit the XFIL a couple of times it cleared up even though I did
not change any filters.  It stayed ok for a couple of hours of making
contacts, so I hope it is cured... 73  Jim W6US

On Fri, Oct 6, 2017 at 3:52 PM, Don Wilhelm <[hidden email]> wrote:

> Jim,
>
> Yes, the filter width in DATA A mode defaults to a narrow bandwidth - even
> though you have the 2.8kHz filter, it still defaults to a narrow bandwidth
> like 400 or 600 Hz (I can't recall which).
> That is an aid to those who choose to use the VFO dial to tune in a single
> data mode station.
>
> SSB mode defaults to the 2.8kHz.
>
> Not to worry, it is easy to change, just grab the WIDTH knob and turn it
> until you see a waterfall width to your liking.
>
> 73,
> Don W3FPR
>
> On 10/6/2017 6:28 PM, Jim Shepherd wrote:
>
>> When I switch to DATA mode, the receive bandwidth is only about 600 Hz
>> even
>> though when I check with Data MD it shows the USB mode. I have the 2.8
>> filter selected and it shows on the display and using the K3 Utility
>> program.
>>
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Don Wilhelm]

Jim,

Why use XFIL at all?  The filter selection will follow the DSP filter
bandwidth, switching in your filters as needed for the bandwidth
selected by the DSP Width filter.

I never have found a use for the XFIL button on my K3, I do it all with
the width control.

73,
Don W3FPR

On 10/6/2017 9:10 PM, Jim Shepherd wrote:
> Thanks for the help--Bandwidth was showing full on the screen on the K3s,
> but when I hit the XFIL a couple of times it cleared up even though I did
> not change any filters.  It stayed ok for a couple of hours of making
> contacts, so I hope it is cured... 73  Jim W6US
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]