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Stefan
I did see ur switch over to DFCW at 1000 utc and
wondered what was happening because it takes so long at that speed to see the
change.
73 de mal/g3kev
----- Original Message -----
Sent: Sunday, November 27, 2011 11:38
AM
Subject: Re: LF: Re: 8970.005 -
overnight
Hi Eddie, VLF,
Thanks for watching! The spectrogram
looks fine and i haven't expected that S/N from my low ERP i have here.
Since 10 UTC i switched to DFCW-600 which is well visible at OK2BVG http://www.ok2bvg.cz/vlfgrabber/
but the QRN is higher than in the last days.
Strongs wind comes up here
now, so maybe i have to QRT soon. If not i will try to transmit my complete
call in DFCW-600.
All in all i think the transmissions on the fixed
antenna look promising if i can add another 6 dB but a real kite experiment
with the 300m vertical just gives a 20 dB stronger signal and allows better
detections in a shorter time. I also like the transmissions on 5170 or 6470
Hz.
73, Stefan/DK7FC
Am 27.11.2011 09:57, schrieb qrss:
Overnight
signals at IO92ng http://g3zjo.bplaced.net attached
73
Eddie G3ZJO
On 27/11/2011 00:01, Stefan Schäfer wrote:
Paul, VLF,
Am 27.11.2011 00:16, schrieb Paul:
Stefan,
I register here your signal on the new
frequency.
That is fine. Of course i am watching your
"grabber" but saw that the signal seems to be weaker since 20 UTC. Is this
due to the rising noise? I would think so...
Overnight I expect your S/N here to decline, may even
lose
the signal in the noise. Expecting that as the noise
comes
up at Marlton, so will the signal. We shall see.
Yes. Here, these days the noise has its maximum just
before 0 UTC so it may become even better here!
Laurence/KL7UK and
Bill/VE2IQ are running their grabbers too. They use GPS locking (with
SpecLab, which seems to work well) and loop antennas.
See http://kl7uk.com/VLFAlaska.html and http://www.magma.ca/~ve2iq/grabs/index.htm
Attached provisional uncalibrated spectrum from Marlton
17:00
to 21:00 in one integration.
That looks quite
clear. I still can't belive it completely. Does all that mean we have done
the first transatlantic detection of a non-commercial generated signal on
VLF? If so, please write a good explaning webpage as you did 2010 (it was
very nice to read, especially the conclusions ;-) ), so that i can post
the link on the LF group!
After first hour on new frequency, the peak on
Marlton's
spectrum has moved from 8970.0 to 8970.005.
Will send
phase data in later email.
Which
would confirm what is actually done and so it rises the proof that this is
my signal! Wow!
Will you change frequency again at say 02:00 in order to
complete a 'K' ?
No, i will now stay on 8970.005
until at least 9 UTC which should allow some further integration times to
get a better detection. Maybe some signals will come up in Alaska too.
Laurence often reported that DHO38 is strongest just before my local
sunrise and has a sudden drop then.
This is my first over-night
transmission so i am optimistic to get some more interesting results and
propagation phenomena can be observed. BTW, there is room for another
3...6 dB ERP here...
73, Stefan/DK7FC
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