Another repeat will be running 9:00:02 until 10:25:22. 73, Markus From: Markus Vester Sent: Sunday, March 20, 2016 8:15 AM To: [email protected] Subject: Re: VLF: EbNaut 8270.1, Sunday Mar
Both EbNaut sequencies went out ok on 8270.1 Hz. I'll leave the carrier on 8270.0025 for a couple of hours to see whether the phase is stable now after the GPS antenna has been repositioned, and whet
And both came in ok here, 07:10:02 Eb/N0 = 2,0 dB from BER 33.8%, carrier 2.6 dB; 09:00:02 Eb/N0 = 1.7 dB from BER 34.2%, carrier 1.1 dB; Your messages almost always decode here, a very reliable sign
Very fine again Paul, thanks for the report. Looks like DJ8WX has also fired up on 8270.000 Hz this afternoon. Rotating the pointer on your directional spectrogram allows us to toggle between your lo
The phase doesn't look very steady Markus. Below are 10 minute averages, stepping 5 mins and the timestamp is the start time of each window. 2016-03-20_10:30:00 0.02 fT -94.4 deg 2016-03-20_10:35:00
Thanks Paul for the measurements. Hmm, it's a bit disappointing, especially as I don't know the cause for the variation. From here, it appeared that the PLL was nicely in lock every time I looked, an
Paul, maybe the explanation is that with 10 minute averages my signal is just too close to the noise. Plotting your data as complex numbers seems to show a fairly Gaussian distribution around a globa
You're right. I confirmed this by injecting an artificial carrier into the VLF recording at 8271.0025 at the same average strength as your signal, then running this signal through the same process. T
Thanks again Paul for the effort. The result does make sense now. The one-hour averages seem to show a slow trend towards negative (retarded) phase after 15 UT, which may be caused by decreasing sola
