I'll leave the grabber on:
http://www.magma.ca/~ve2iq/grabs
Bill,
VE2IQ
At 12:44 PM 1/1/2015, Stefan DK7FC wrote:
Hi Warren,
Nice. Yes i am interested. The window is clear, see
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_LF_DX_Grabber.html
 (in the moment i have a QSO with DF6NM, thus the RX is overloaded
but tonite it will be clean).
73, Stefan
Am 01.01.2015 18:35, schrieb Warren Ziegler:
Stefan,
Â
   Excellent work !
Is the T/A window around 137.78 clear?
I can transmit QRSS tonite if you are interested.
Â
Â
73 Warren
Â
On Thu, Jan 1, 2015 at 11:04 AM, DK7FC
<[email protected]
> wrote:
- Hi LF,
- Happy new year to all over the world!
- In the afternoon i have done some maintenance on the LF/MF grabber
PC. Deleted about 1 million jpg files (> 100 GB) and adjusted the
brightness settings for the grabber displays. It is active again now with
mch improved sensitivity. In the afternoon the wideband grabber window
show clearly that most of the residual man made noise is now coming from
DCF39 and HGA22. 136.5 kHz is clearly the best frequency for CW.
- >From the 2 seconds long daily breaks while DLF on 153 kHz
switched from 500 kW to 250 kW at 19:59:58 local time i know that there
will be a fignificant reduction of my background noise level on LF/137
kHz.
- Now it turns out that there is an improvement of 8 dB on LF!!!
- On MF there is nearly no change, just a small QRM trace disappeared.
Average background noise is the same. LF and MF is using the same active
antenna frontend!
- On VLF (separate antenna) there is no significant change.
- Here is a complation of images showing the differences before and
after the closure of DLF/153kHz:
https://www.dropbox.com/sh/y6vccbmn9z9v97g/AACTB7MCUVxOfYK0PXtVX1A5a?dl=0#lh:null-01_3_31.DEC_23.30UTC.jpg
- Unfortunately i forgot to stop my MF WSPR transmission over the night
so there may show some QRM on each 10th minute.
- Now, this night i will watch/receive on LF and am asking for LF
stations to transmit, especially the far Russian and TA stations.
Let's make it an active night while am silent (exceptionally :-) ). In
the evening i am trying to make some QSOs...
- Let us make a sked for a LF CW test on the weekend, maybe on 10 UTC
on 136.5 kHz. Anyone interested, e.g. DK1IS?
- 73, Stefan/DK7FC
--
73 Warren K2ORS
        WD2XGJ
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