On Christmas I saved SAQ.usr.wav here.. It is quite large, about 128,000 kB on the drive. I am trying to figure out if the light trace I saw on the correct ...
Hello Bob, where's that file, and what name ? Try to rename it; saq.usr.wav is possibly not a valid filename. There should only be one "dot" in a filename,...
Hi Bob, I analysed your recording, and found the sampling rate in it was 2666 samples/second, so I guess you recorded the 'downconverted output' audio signal...
... thanks for the help Wolf. I never figured out exactly _which_ place to start *good* recording in Spectrum Lab. Also, what FFT number should I use? I have...
Hi Walter, In the end i managed very good reception of SAQ, but my attempts to record it at the same time failed. The bandwidth recorded was very narrow, i...
Just use the same sampling rate for the logging wave-file as for the soundcard's sample rate. For example (good for SAQ) set the audio sample rate to 48 kHz...
Hello Bob, See my other post regarding soundcard sampling rate and wave file sampling rate : "It all depends". If you know the signal will only cover a few...
... thanks, I just did. not mentioned though was the "RAW" check-box. I guessed that form your comments about the way I saved SAQ the other day that I should...
Hi Wolf, For the moment I've started to use an older version , V2.7b11, which keep the time when using the pc clock perfect, I run ClockWatch in the background...
Hello Patrick, I have slightly modified the "time-source" settings in V2.7 b10 (which is on the "beta"-site) but didn't find the time yet to check if this ...
Wolf How does the numbers 0.9 and 0.1 relate to each other ? Can I vary they independently of each other ? Schuman_f = 0.9*Schuman_f + 0.1*peak_f(#2,11,17)"...
.. to everyone (guess we're all in 2011 at this time). Also special greetings to the first new member of this group in 2011 - nice to know you're here Chris,...
SL users, A very Happy New Year 2011 to everybody and thank you Wolf for the warm welcome and for the wonderful software which made possible DK7FC's VLF...
Hello Chris, Theoretically, the latest versions of Spectrum Lab allows up to 20 instances running side-by-side on the same PC (added for DK7FC's application)....
Hello Jonathan, ... I didn't try this myself (due to a shortage of time), but maybe you can replace the 'source' for the timestamp value by a numeric...
Good morning. I'm trying to set up Spectrum Lab to use it with Perseus but without success. I'm running Win7 Ultimate and, following the instructions, I copied...
Hello Walter, The last time I added the signatures (kind of copyright protection for the Perseus firmware) is about half a year ago. The latest FPGA codes at ...
Hello Ugo, Since I don't use windows 7 I cannot help debugging this. Make sure you have the latest FTDI drivers installed, which are required to "talk" to the...
Hello Wolf, and thank you for your reply. The message I'm receiving from SpectrumLab is : "couldn't init PERSEUS : Perseus receiver not detected". I copied all...
Hello Ugo, Sorry, my mistake ... I am using too many SDRs here ... for Perseus, you don't have to install an additional driver. The description on ...
154
Jurgen Bartels
jurgenb2@...
Jan 23, 2011 6:36 pm
... I use these: 4.06.2010 17:01 169.297 perseus1m24v21.sbs 4.06.2010 17:01 169.297 perseus2m24v21.sbs 4.06.2010 17:01 169.298...
155
Jurgen Bartels
jurgenb2@...
Jan 23, 2011 11:37 pm
This afternoon I made a video scanning the 10-30 kHz range. The beverage uses a transformer that copes with that low range, my former did not do that. Even the...
Hi all, and thanks a lot for your help. At the moment I cannot do anything but I'll apply your suggestions as soon as possible and I'll let you know about...
Dear Wolf, I'm using Spectrum Lab to record ELF electromagnetic signals in Central Italy. Now I have five station with a 24h/24 recording (at 2kHz 16bit...
Hi Cristiano, Did you try this: In SL's main menu, "File" .. Audio Files .. Audio File Settings .. allow extra chunks in WAVE-headers [chechmark, turn off] ? I...
Yes, but I obtained the same message from La... other questions: would be possible to avoid creating the file aux? and I would like to ask a date of the...
Hi Tom, The overload-detection is just a safety measure, because if a high-priority worker thread (such as the audio-processing thread) occupied a single-core...
