Stefan LF
Not forgetting of course DFCW60000 20dB above the noise in 47uHz
73
Eddie G3ZJO
On 27/11/2011 08:57, qrss wrote:
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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