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)
