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PSK31 waterfall width control

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Julie Royster

PSK31 waterfall width control

Earlier I thought I understood that setting the filter width on the KX3 to
maximum would yield a wide waterfall on PSK31, but there must be something
else too because now I have narrow waterfalls while the KX3 filter width is
still set wide. What am I missing? THANKS!
Julie KT4JR

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Don Wilhelm-4

Re: PSK31 waterfall width control

Julie,

I just checked my KX3 using a broadband noise generator and Spectrogram
to view the passband width. With the WIDTH set to maximum, the passband
extends from 250 Hz to above 3000 Hz (which should fill the waterfall on
Fldigi). I do not have Fldigi installed on my workbench computer, but
that should not make any difference.

Use the numbers in the KX3 WIDTH display to judge the actual width - if
you look only at the graphic on the display, it goes to its maximum
width when the actual width is greater than 1.2 kHz.

The PBT knob normally alters the center frequency (FC). Tap it to
change the knob function to WIDTH.

73,
Don W3FPR

On 9/7/2013 5:37 PM, Julie Royster wrote:

> Earlier I thought I understood that setting the filter width on the KX3 to
> maximum would yield a wide waterfall on PSK31, but there must be something
> else too because now I have narrow waterfalls while the KX3 filter width is
> still set wide. What am I missing? THANKS!
> Julie KT4JR
>
>
> ______________________________________________________________
> 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
>

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vk2rq

Re: PSK31 waterfall width control

In reply to this post by Julie Royster

Maybe the sampling rate on your sound card is too low?

I did once see a glitch where the filter bandwidth was set wide, but the waterfall was narrow. I forget the details, but it wasn't hard to recover, and I never saw it again. That would have been late last year sometime.

73,
Matt VK2RQ

On 08/09/2013, at 7:37 AM, "Julie Royster" <[hidden email]> wrote:

John Fritze

Re: PSK31 waterfall width control

In reply to this post by Julie Royster

Julie,

I found this posted somewhere when I had the same problem. There is an
adjustment in FLDigi itself that will make the width wider. It is not a K3
issue.

*The FLDIGI waterfall display width is controlled by the "xN" key, located
at the bottom of the display screen. "N" value can be 1 (where I had it
set), 2, 3, or 4 (full width).*
*
*
I hope that helps. We are moving forward with NBEMS in the ENY section and
FLDigi is the main program with little add on's for EMCOMM.

--
John Fritze Jr
K2QY
AARA president 2013
ACACES secretary 2013
Albany County RACES Radio Officer
ARES ENY DEC Northern District
Hudson Div. Asst. Director
Twitter: @k2qy
401 261 4996 (cell)
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