[Skimmertalk] How to skim more than 24 kHz with Flex 5000A RX2

[Edward Russell]

Many CW Skimmer users have asked for a way to expand the skimmed bandwidth
beyond 24khz with a Flex 5000. This is possible if you have a Flex 5000 RX2
second receiver. Assuming you already have Skimmer set up to work with the
Flex, here are the 20m CW steps:

Use the w2rf branch of PowerSDR:

On the VAC page check Use RX2

Set the Primary Sample Rate to 96khz/512 (for this example)

Set the RX2 VFO frequency to 14.056

Make sure SR (spur reduction) is off

In Skimmer:

Set the Radio Type to SoftRock (NOT SoftRock-IF)

Set the CW Pitch to 600 (or whatever you use)

Set the LO Frequency to 14046400 (RX2 freq - 9khz IF freq - 600hz vfo pitch)

Set the Sample Rate to 96khz

Start PowerSDR and CW Skimmer

That's it! Skimmer is now skimming 96khz of bandwidth.

(You can still use RigSync to Click-Tune PowerSDR VFO 1 from Skimmer)

Let me know of questions or problems.

73 Ed W2RF

> -----Original Message-----
> From: skimmertalk-bounces at contesting.com [mailto:skimmertalk-
> bounces at contesting.com] On Behalf Of Mack McCormick
> Sent: Sunday, November 30, 2008 9:40 PM
> To: skimmertalk at contesting.com
> Subject: [Skimmertalk] More than 24 kHz with Flex 5000A
> 
> 
> Has anyone figured out how to get CWSkimmer to process more than 24 KHz at
> a time with the Flex 5000A and virtual audio cable? A reply from Alex says
> that this is a known limitation. Alternatively, does anyone know if Alex
> intends to support the full 192 kHz of the Flex 5000? I found 24 kHz to be
> a major limitation in the CQWW CW contest this weekend.
> 
> "CW Skimmer decodes a fixed-width segment of the band, regardless of the
> waterfall size. In the SoftRock-IF mode, the segment size if 24 kHz. If
> you
> are wondering why, please see the Configuration / Radio / SoftRock-IF
> section in the Help file"
> 
> 
> 73,
> 
> 
> 
> Mack
> 
> WB4MAK
> 
> 
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