[Skimmertalk] CWS and PowerSDR again..

Andrew O'Brien k3ukandy at gmail.com
Fri Jan 1 21:08:38 EST 2016

One more tip...  Polling settings may not have been an issue but after
getting the aforementioned settings correct, the misaligned streams within
CWSkimmer seem to have been solved by ensuring that WDM drivers are used by
both PowerSDR and CW Skimmer and more importantly , the *VAC buffer latency*
setting within PowerSDR is set to 60 rather than default 120.
Andy K3UK

On Fri, Jan 1, 2016 at 8:20 PM, Andrew O'Brien <k3ukandy at gmail.com> wrote:

> I have the problem, almost solved.  I did also hear from 2-3 other that
> have a similar problem.  CW Skimmer works fine with my other SDR radios, so
> the issue is specific to Flex radios and probably PowerSDR .  Anyway, after
> going back to basics I have it close to working by following instructions.
> The only thing remaining to be solved is the fact that when I click on a
>  stream within CW Skimmer the Skimmer and PowerSDR frequencies shift
> correctly but the desired morse code stream is not close enough to display
> in the decode window . However this is random,  2-3 more attempts causes it
> to be perfect.  I suspect a polling issue, possibly DDutil or VSPM
> related.  Still working on it.
> For those with this problem my trouble shooting reveals...
> CW Skimmer settings ... Radio= Soft rock-IF. CW Pitch = 600. IF Hz = 9600
> . Sample Rate 4800 .
> PowerSDR setting : Sample Rate =4800 . VAC Direct box checked, Calibrate
> IQ box checked. IF Hz =9000 (in expert area).
> Andy K3UK
> On Fri, Jan 1, 2016 at 5:08 PM, Pete Smith N4ZR <n4zr at contesting.com>
> wrote:
>> Andy, you might want to be in touch with VE2WU,  I believe he has had
>> some similar issues and might be able to help.  You might also re[ost this
>> on the RBN-OPS at yahoogroups.com reflector, which is rather larger than
>> the Skimmertalk group.
>> 73, Pete N4ZR
>> Download the new N1MM Logger+ at
>> <http://N1MM.hamdocs.com>. Check
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>> <http://reversebeacon.net>, now
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>> For spots, please use your favorite
>> "retail" DX cluster.
>> On 1/1/2016 3:45 PM, Andrew O'Brien wrote:
>>> I often have months where CW Skimmer, PowerSDR and my Flex 3K work
>>> together
>>> perfectly. Then inexplicably the display in CW Skimmer is WAY OFF the
>>> actual frequency and no amount of logical adjustments solve the problem.
>>> Then, perhaps a few days after I have given up following hours of trying
>>> to
>>> fix, all is magically working again. Today, while PowerSDR is tuned to
>>> 7050
>>> CW , Cw Skimmer is displaying the tell-tale images of JT65A that reside
>>> at
>>> 7076!
>>> So, since many posts about correct configuration are old links, I wanted
>>> to
>>> double check my assumptions about correctly align CW Skimmer with
>>> PowerSDR.
>>> Comments appreciated .
>>> In PowerSDR ... (General tab) IF Hz = 9000 . (Audio Tab) OUTPUT TO VAC
>>> Checked .
>>> In CW Skimmer SOFTROCK-IF selected . CW Pitch 600, Audio IF Hz = 9000
>>> Anything obvious missing ?
>>> Sometimes when off by many Khz, I can get close by changing the audio IF
>>> in
>>> CW Skimmer. I trim it up or down by a few hundred Hz, but just as I
>>> think I
>>> am getting close, it zooms to a WAY off range again. If I leave it for a
>>> few days, it seems to fix self.  Clicking on a stream within CW Skimmer
>>> causes skimmer to move up or down, so you never land on a desired stream.
>>> Others report this issue too.
>>> Andy K3UK
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