VLF,
The last (7th) day-tranmission in this experiment is completed. The last
(3rd) night transmission will start at 20 UTC.
Tomorrow, 6 UTC, a carrier starts on 6470.005 Hz, taking 48 hours. A
test for RN3AUS and IK1QFK and all those taking part in the background.
73, Stefan
Am 16.11.2016 19:48, schrieb Paul Nicholson:
Summing after each reception normalised to relative noise RMS 1.0;
S/N is dB in 2500 Hz;
Day tests:
Eb/N0 S/N Phase RMS
11th Nov 3.9 -62.5 -141.2 2.56
12th Nov 4.9 -59.7 -134.3 2.01
11th to 12th 7.5 -57.9 -137.1
13th Nov 8.5 -55.6 -138.5 1.07
11th to 13th 9.6 -53.8 -137.8
14th 3.5 -61.3 -136.8 2.48
11th to 14th 10.4 -53.1 -137.6
15th 1.1 -64.0 -139.9 3.59
11th to 15th 10.7 -52.9 -137.8
16th 5.0 -60.8 -140.8 2.45
11th to 16th 11.0 -52.2 -137.4
Night tests:
Eb/N0 S/N Phase
15th Nov -3.0 -67.8 -34.0 no decode
I wrote:
> Later I'll fire up LWPC and plot some examples of long
> distance paths.
For 1uW ERP, DK7FC to Todmorden
http://abelian.org/vlf/tmp/1479317903_9356.png
Daytime signal -34dBuV/m corresponds to about 0.03 fT
DK7FC to vlf35 Virginia
http://abelian.org/vlf/tmp/1479318501_18872.png
-54dBuV/m, about 20dB weaker than Todmorden reception,
would need 100 days summation to build up the same
signal.
DK7FC to Tasmania:
http://abelian.org/vlf/tmp/1479318832_10010.png
A crazy looking diurnal. At -145dBuV/m, even a century
of summing wouldn't come anywhere close to this.
Sorry Edgar.
--
Paul Nicholson
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