[Skimmertalk] Wandering skimmer

[Andrew O'Brien]

Yes it is.
Andy



On Tue, Feb 18, 2014 at 7:35 AM, Alex, VE3NEA <alshovk at dxatlas.com> wrote:

> Hi Andy,
>
> Is spur reduction turned off in PowerSDR?
>
> 73 Alex VE3NEA
>
>
>
>
>
> On 2014-02-18 07:15, Pete Smith N4ZR wrote:
>
>> Andy, I think you would be well-advised to put your question to Alex
>> (alshovk at dxatlas.com).  Softrock-IF is designed, as the name suggests,
>> to be used with a fixed center frequency Softrock SDR, and is limited to
>> a 24-KHz bandwidth.  I know it has been worked around by some for use
>> with a Flex, including VE2WU, but I do not know the details.
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network at
>> http://reversebeacon.net,
>> blog at reversebeacon.blogspot.com.
>> For spots, please go to your favorite
>> ARC V6 or VE7CC DX cluster node.
>>
>> On 2/17/2014 10:22 PM, Andrew O'Brien wrote:
>>
>>> Pitch is 600 Hz in PowerSDR and in CW Skimmer.   Skimmer is set to use
>>> Softrock-IF. Audio IF is 9600 , PowerSDR 9000.  I selected PowerSDR as
>>> the
>>> rig type in CW Skimmer.  It is intesrting that is is only a problem with
>>> signals in the middle.
>>> Andy K3UK
>>>
>>>
>>> On Mon, Feb 17, 2014 at 9:53 PM, Bob Wilson, N6TV<n6tv at arrl.net>  wrote:
>>>
>>>  Which device did you select for "Hardware type" in CW Skimmer?
>>>>   Softrock-IF?   3 kHz Audio?  Those are the only two modes that cause
>>>> CAT
>>>> commands to be sent by CW Skimmer to the radio via OmniRig, unless
>>>> you're
>>>> using another program like RigSync to do that.
>>>>
>>>> When using Softrock-IF, notice how the Audio IF Frequency can only be
>>>> set
>>>> in 50 Hz increments.  To what values is it set?
>>>>
>>>> What radio type did you select in OmniRig?  Looks like CW Skimmer is
>>>> telling the PowerSDR to QSY, which moves the center frequency of the IF
>>>> (or
>>>> maybe to nearest 50 Hz), so it ends up in a new place, which moves all
>>>> the
>>>> signals.  Notice how the frequency at the top changes almost every time
>>>> you
>>>> click.
>>>>
>>>> Maybe there is a QSY resolution limitation (PowerSDR center frequency
>>>> can
>>>> QSY to nearest 100 Hz only when controlled by OmniRig)?
>>>>
>>>> Is the CW Pitch setting in CW Skimmer the same as the CW Pitch setting
>>>> of
>>>> the PowerSDR (500 Hz or ?).
>>>>
>>>> Could be a CW offset issue.
>>>>
>>>> Lots of variables to deal with in this setup.
>>>>
>>>> 73,
>>>> Bob, N6TV
>>>>
>>>> On Mon, Feb 17, 2014 at 4:52 PM, Andrew O'Brien<k3ukandy at gmail.com>
>>>> wrote:
>>>>
>>>>  Hmm, I have a wandering skimmer. Take a look at this
>>>>> http://www.youtube.com/watch?v=gzDn-brEkHE&hd=1  may be better to view
>>>>>
>>>> full
>>>>
>>>>> screen . At the beginning of the video CW Skimmer is working as it
>>>>>
>>>> normally
>>>>
>>>>> does. When I click on a skim, I start decoding it in the bottom window
>>>>>
>>>> and
>>>>
>>>>> the received signal is lined up with the green marker. It works fine at
>>>>>
>>>> the
>>>>
>>>>> top of the screen or when i click the bottom of the screen. Look what
>>>>> happens when I click on signals in the middle of the waterfall. When I
>>>>> click on the signal, nothing is decoded because the received signal
>>>>>
>>>> climbs
>>>>
>>>>> UP the waterfall each time! This is using CW Skimmer and PowerSDR
>>>>> 2.7.2 .
>>>>> Any idea ?
>>>>>
>>>>> Andy K3UK
>>>>>
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>>