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Chris,
"not a trace", but a few bright pixels on the
right frequency:
On the 56 uHz spectrogram (one hour per pixel
from 2:34 till 16:34 UT, spectrum plot shown with cursor on 12:34),
there is a slant blob on 8976.6616 Hz. The frequency
appears to be rising by a couple of
bins - would you perhaps be able to confirm a 10 ppb upward
drift?
The 0.48 mHz spectrogram also has row of
brighter pixels on .662 between 10:30 and 13 UT. All this is probably not yet a proven detection but at least a positive
hint.
The upper part of both screenshots contains a
transmission from Ossi 'ODL around 8969.974 Hz.
Best 73,
Markus
(DF6NM, Nuernberg,
JN59NK)
Sent: Saturday, April 02, 2011 11:08 AM
Subject: Re: LF: VLF - G3XIZ - transmitting now
Hi Chris,
looking out for you in a 56 uHz FFT again - nothing
visible yet but of course there's a delay due to the 5 hour
integration.
Interesting to note the ups and downs of your
signal on Eddie's grabber. Based on your kite info, I'd
estimate your average EMRP in the 10 to 20 uW area. Should
be within range of here, if QRN / QRM will remain benevolent, and
if you can stay on long enough with the kite.
Best wishes,
Markus (DF6NM)
Sent: Saturday, April 02, 2011 10:31
AM
Subject: Re: LF: VLF - G3XIZ -
transmitting now
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LF,
Thanks to Eddie (Northampton), Roger (nr
Cambridge) and Paul (Todmorden) for the reports and screen
shots.
The kite is still aloft despite nearly snagging a nearby
tree several times.
The wind is gusting and changing direction quite
rapidly which is causing big fluctuations in aerial current. The max
current is about 0.25A min about 0.15A
I estimate the aerial height
as being between 40 - 50m (occasionally down to 15m!) with 70m of total
wire run out.
Provided the wind doesn't shift too far to the East
(where there's danger of snagging house TV aerials) and the kite doesn't
break free I'll leave the set up as it is.
73 Chris
G3XIZ
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