OK Roger
Yep it surprises when you see it. I will start the 600 widow
grabbing again now, Just a bit higher and we see how clean it is.
There is nothing better than a tractical demifasion. :-)
Marcus if we move they will only follow us :-)
73 Eddie
On 07/04/2011 19:17, Roger Lapthorn wrote:
Thanks to everyone (Wolf, Eddie, Marcus etc) for
replying to my question.
Eddie, yes I have seen the trace and how quickly going HF a few Hz
the interfering signals disappear. I was just a bit afraid that
for some reason the top window was less sensitive, but this seems
unlikely to be the case.
73s
Roger G3XBM
On 7 April 2011 18:33, wolf_dl4yhf <[email protected]>
wrote:
Hi Roger,
Guess the burst originates from a periodic signal (maybe
something rich in harmonics), and one of the harmonics is
closer to one of the frequency ranges than the other. Or.. the
two bands are fed from two different sources - one before, and
the other after the noise blanker, or clipper ? You can
quickly check that in the 'circuit' window. But if you say
it's just the split screen mode, then the two frequency ranges
are indeed fed from the same FFT.
All the best,
Wolf .
Am 07.04.2011 18:09, schrieb Roger Lapthorn:
Help...
After lunch today my wife turned on the washing machine
and the tumble drier and for two periods there was a
burst of interference visible on the lower split screen
as vertical noise stripes. What I don't understand is
why I don't see these also on the upper trace around
8.976kHz too when the settings are the same. I have a
SL filter selected but it is centred around 8.970kHz
with 400Hz width and slopes so this cannot explain this.
Surely the noise bursts should appear in both parts of
the screen?
Can someone who understands Spectrum Lab explain this
please?
73s
Roger G3XBM
--
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