[Elecraft] [K3] Phase Noise / CW Key Clicks

David Gilbert xdavid at cis-broadband.com
Fri Sep 14 16:32:13 EDT 2012


True.  As I said in another post, I'd love to see someone write an SDR 
application that captured and quantified such things, but in the absence 
of that screenshots from a scrolling spectrum display (waterfall) would 
help.  The problem is that you lose the amplitude information when you 
use the waterfall that is necessary to establish the time correlation 
between center frequency and spurious crap.  With a normal spectrum 
analyzer that shows amplitude you can't see the correlation in a screenshot.

Maybe it's possible to display a 3D spectrum display!   ;)

73,
Dave   AB7E




On 9/14/2012 12:32 PM, Ian White GM3SEK wrote:
>> I don't scan the bands
>> looking for bad signals because I spend my time contesting instead, but
>> I always jot down the callsigns of the really bad signals I find and I
>> highlight the worst of them in my 3830 report. I've seen others do the
>> same, although it would certainly help if everyone did.
>>
>> Dave   AB7E
>>
> But we still need objective evidence, to justify action being taken.
>
> For this and many other reasons, it really would help is if we could
> *quickly* dump high-resolution screen grabs out of the P3SVGA's USB
> port, onto a memory stick for example.
>
> (A simple system-generated filename with a time stamp would be enough to
> identify the image for consideration later, without interrupting our own
> operating.)
>
> Part of that same signal analysis package would be a much faster
> waterfall for improved time resolution.
>
> These features were kind-of on Alan's list, but they need some momentum.
>
>



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