Alan and Stefan
I have made some changes to the web page which will hopefully give
some more information.
I was trying to combine five or maybe seven days of signal data
and I thought the inclusion of the noise data as well would make
too congested so I have added separate graphs.
The station parameters have not changed for a considerable period
of time, as far as I know, and the noise level is generally
constant at that time of the morning although it did show it to be
quieter yesterday.
I have increased the peak hold time to ten hours. I am not
currently using the noise blanker as it doesn't appear to make any
difference - are you suggesting that I should?
Bob VK7ZL
On 3/05/2012 11:34, Alan Melia wrote:
Hi Bob great stuff!! that is a very interesting and useful plot you have.
Well Done. One addition that is often added is a narrow band plot of the
noise, just clear of the main signal. You do seem to have a very quiet
location, so this may not be needed to identify local "miscreants"
:-))...... see Scott Tilley's VE7TIL plots of DCF39.
However in the long term it acts as a very usefull "calibration and
confidence" facility confirming that your aerial sensitivity is still in the
right area. One difficulty with long term propagation monitoring is ensuring
that the receiving station's parameters have not changed. If you can do
that, you are sensibly able to determine when the best strengths are
achieved during the year, and the effects of both small and major
geomagnetic distrubances. Without it you are always wondering whether the
signal has been affected by local weather or an increase in the band noise,
or even a coroded connection (been there, done that :-)) ) etc.
The levels you are seeing suggest that western Europe to VK7 is well within
possibility. It just needs the right conditions for long enough and maybe
the right transmission mode.
Best Wishes
Alan
G3NYK
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