SID Data Collection

Hello fellow members of the Flamsteed Radio Astronomy Group,

It was agreed at our last meeting that we would attempt to collect SID data from our varied VLF receiver systems  tuned to the Ramsloh transmitter (23.4kHz) on the days of 27th, 29th June and the 1st July , starting at 00:00:00hrs UTC and ending at 23:59:59hrs UTC. For those of us using Spectrum Lab it would be desirable that data for each day exported from the Watch Window should be stored in a csv (comma separated variable) text file.  Time should be saved in column 1 of the data set with the signal amplitude in column 2.  How to achieve this is explained in the Spectrum Lab Manual, accessed by the following link:

http://www.qsl.net/dl4yhf/speclab/watchwin.htm#export

The time zone should be UTC  in the format YYMMDD hh:mm:ss .

If you have been unable to calibrate your system the signal amplitude should be expressed as dB (or dBfs) as explained in the Spectrum Lab Manual:

"For absolute measurements, the input amplitudes must be calibrated. Amplitude display units like Volts or dBuV only make sense if the relationship between A/D converter value and absolute input voltage is known. Otherwise, stick to the <u>default amplitude display unit</u> which is "dBfs" (dB relative to full scale) ."

If you are not using Spectrum Lab to analyse and record the VLF signal it would appreciated if the data could be recorded in the format described above as this will simplify the task of collating the data sets.

If/when you have successfully collected the data, (even if for just one of the chosen days), please email it to me and I will attempt collate our data sets.

Here's hoping for an SID event on at least one of the days!