[50mhz] Re: CW Skimmer 1.1

[LANCE COLLISTER]

Alex, VE3NEA wrote:
> Hi Lance,
> 
> CW Skimmer can sample up to 192 kHz with SDR-IQ and decode all CW 
> stations in that segment if the CPU speed is sufficient - watch the cpu 
> load indicator on the status bar. The waterfall display can potentially 
> show up to 24 kHz of spectrum but there are not monitors of that height. 
> I have a 24' LCD monitor mounted vertically and can see about 22 kHz on 
> the waterfall.
> 
> 73 Alex VE3NEA
> 
> 
> ----- Original Message ----- From: "LANCE COLLISTER" 
> To: 
> Sent: Tuesday, April 15, 2008 02:36 AM
> Subject: CW Skimmer 1.1
> 
> 
> 
> Hello!   I recently heard about CW Skimmer and tonight I tried it out to
> see how it worked with my SDR-IQ for monitoring the 6m band for
> beacons.  I think it may come in quite handy in watching for band
> openings this summer, and am trying to see what its capabilities are in
> that regard ;-)
> 
> I am using a Delta 44 C sound card, which should have a bandwidth of 96
> Hz, I believe.  And the SDR-IQ can sample more than that.  So I thought
> I might be able to sample a wider section of the band with CW Skimmer.
> But no matter how I choose the Sampling Rate settings in CW Skimmer, it
> seems that I only process plus and minus 10 KHz around the center
> frequency (total bandwidth of 20 KHz).  Is that the limit of the
> program, or am I not using it properly?  Is it possible to have the
> window show more than only 10 KHz bandwidth?  I have a very high
> resolution monitor, and it would really be nice to be able to display 20
> or more KHz at a time, to be able to see at a glance what is happening
> with the band.
> 
> I look forward to hearing from you!  MNI TNX and VY 73, Lance
> 
> 
> 
OK MNI TNX Alex!  I was not aware that the program was actually examining the 
whole 192 KHz even though it was only displaying 10% of that spectrum.  The 
auxiliary computer I am using to monitor the band is not being used for logging or 
other activities, and has a dual AMD 6400 processor which doesn't seem to have any 
problem keeping up with the computational demands.

I will continue to experiment with it.  The problem is that 6m has not opened up 
yet, so I can't really see how well it will work here yet.  However, it has 
successfully identified a couple beacons that have popped in briefly.

Thanks and GL with the program!  VY 73, Lance

-- 
Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
P.O. Box 73
Frenchtown, MT  59834  USA
QTH: DN27UB
TEL: (406) 626-5728   URL: http://www.bigskyspaces.com/w7gj
2m DXCC #11, 6m DXCC #815