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Hi Scott, LF,
I've temporarily tuned the grabber to 153 kHz,
inserted a 20 dB pad, and slowed down the TA window to 10.5 mHz resolution, 30s
scroll:
I intend to leave it running for a couple of
hours, and bring it back to 137 before going to bed.
The cyan line on 0.0 Hz is DLF Donebach at ~ 277°,
with weak sidelines at 0.2 Hz multiples from the data frames. I have
placed a null on it, but the E-H cancellation is incomplete due
to skywave QSB effects.
The strong orange line at + 0.525 Hz is
clearly Brasov (Romania) at ~140°. This is most likely the "new unid" in
your spectrogram.
I can't make out Bechar Algeria yet (should be
green and strong), but if it's on frequency I couldn't separate it from DLF
here. Same perhaps for Ingoy (Norway, dark blue).
No signs of "VOR" Komsomolsk at + 1.5 Hz either,
but that may simply be too far.
Best 73,
MArkus
DF6NM in Nuernberg, JN59NK
----- Original Message -----
Sent: Friday, September 17, 2010 8:07
PM
Subject: LF: 153KHz view from EU
Hi Scott,
sounds like a nice challenge for my colour-DF
system...
Donebach is GPS and Cesium controlled so the
carrier should be accurately on frequency. At 160 km, they are
overwhelmingly strong here, and there are close-in sidebands
from low datarate DGPS signalling ("AMDS") and
dynamic carrier control. Even with about 30 dB directional nulling
(left part of screenshot), there is nothing else to see in
daytime.
I will try to take a more detailed look tonight,
when the DLF level should be significantly reduced due to power
reduction and transmit antenna pattern switchover.
Best 73,
Markus (DF6NM)
----- Original Message -----
Sent: Friday, September 17, 2010 5:45
AM
Subject: LF: 153KHz view from EU
Would someone with suitable equipment in Europe mind taking a
look on 153KHz and sending me a grab of the carriers there?
I would
like to sort out who's who. If you could null some of the carriers to
determine rough bearings from your QTH that would be great!
I
understand the following stations are on 153KHz world
wide:
a.. Antena Satelor / Radio Romania - Brasov,
Romania - 1200 kW
b.. Chaine 1 - Béchar, Algeria - 2000
kW
c.. Deutschlandfunk - Donebach, Germany - 500 kW (250 kW
night)
d.. NRK Finnmark - Ingoy, Norway - 100
kW
e.. Radio Rossii - Komsomolsk, Russia - 1200 kW
(presently known to be at ~153001.5Hz)
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