Have set-up to record using SL with 1.43051 mHz bin width, 30 second waterfall interval. https://dl.dropboxusercontent.com/u/101251787/temp/DX%20IDC%20M%20spec%202015-12-07%200032.PNG Using IDC-136II
Hi Joe and Laurence, Following Paul's advice that the EbNaut signal would not be visible on the spectrogram or spectrum the SL instance was stopped. Another instance of SL was set-up with Markus' gui
Hi Joe, An instance of Spectrum lab has been set-up to monitor your signal frequency as per Paul's suggestion. " You should try a 3 hour carrier and record that. Then plot spectra (not spectrogram)
Hi Joe, Result from last night. https://dl.dropboxusercontent.com/u/101251787/VO1NA/VO1NA.gif Some adjustment in Spectrum Lab settings still required. Regards, Edgar Moonah, Tasmania.
Hi Wolf, Thank you for your suggestions. The process used to generate the animated gif 1. Spectrum Lab captures *.bmp images. 2. A simple batch file with these commands converts *.bmp to *.png. bmp2p
Hi Stefan, This is some of the VLF band at ~ 10:40 AM. https://dl.dropboxusercontent.com/u/101251787/temp/Capt%209-12-2015%2010-39-08%20AM.png Regards, Edgar Moonah, Tasmania.
Hi Joe, Thank you. The set-up is being changed to use GPS PPS instead of rsNTP due to internet connection problems. The system should be working again in an hour or so. Regards, Edgar Moonah, Tasmani
Hi Stefan, The receiver used has a lower frequency of 9 kHz. The antenna is an 1 m whip with FET buffer at 9 m, just the one I use all the time. I will contact you when I get free and run some tests.
Results from last night. Data from Spectrum Lab EbNaut instance. https://dl.dropboxusercontent.com/u/101251787/VO1NA/data%209-12-2015.zip rsNTP was running to correct the PC clock. An attempt to use
Signal from IDC-136II. https://dl.dropboxusercontent.com/u/101251787/VO1NA/HGA22%20VER%20O%20spec2015-12-10%202000.PNG Regards, Edgar Moonah, Tasmania.
Hi Paul and Andy, Are these pages related to the IQ topic that your are discussing? http://www.embedded.com/design/other/4213370/Using-Zoom-FFT-for-spectral-analysis http://www.arc.id.au/ZoomFFT.html
Hi Paul, I do not have anything set-up to check that "the frequency is properly locked to GPS". I have a Garmin -18X LVC with PPS and a Rubidium Oscillator. What set-up do you suggest to use? Regard
Hi Joe, The receiver is running now 2345 2015-12-10 UTC. The results will be posted about 2200 2015-12-11 UTC. Not sure what time your tonight is? Regards, Edgar Moonah, Tasmania.
Hi Joe, The noise level is higher in the summer, there are frequent storms off the East coast near Sydney which contribute noise in reception here. http://www.weatherzone.com.au/radar I do not know m
https://dl.dropboxusercontent.com/u/101251787/VO1NA/VO1NA.html Note: images will be deleted from dropbox after one day. Regards, Edgar Moonah, Tasmania.