... Subject: [SpectrumLabUsers] Re: Newbie question - I/Q files ... Dan, Ah! I had not thought of it as a stereo recording, but that should have been obvious...
I have two questions which perhaps someone in the group may be kind enough to address. I am attempting to measure the frequencies and amplitudes of a set of AM...
Hi, I cannot help you with the first question, but regarding the second one, i suppose the error is that peakf() returns one value, while max() is supposed to...
Thanks Chris - I made a screen shot: http://ehydra.dyndns.info/NG/SpectrumLabUsers/Peak.png So the yellow is the momentary spectrum and the green line the peak...
... I don't understand what you want with the file but if you can describe the operation mathematical I can use LTspice to read the wavefile, transform it and...
... Hi Henry, Yes ! Peak-holding spectrum graph If this option is set, the spectrum graph shows an additional curve with the peak value of the previous N...
Hello George, I just returned from a holiday trip and try to wade through hundreds of emails. At the moment i am unable to answer everything, so here just a...
In fact, the colours of those optional graphs were once fixed, until someone asked to make them adjustable. This is what the defineable 'pens' are for. Now,...
Hi Cristiano, I think only very few soundcards (or their drivers) really support such low sampling rates. Not sure why older versions of SL didn't change the...
Hello, I've a precise 10MHz source (G3RUH GPSDO); how to proceed to get something like a Lissajous (with oscilloscope used in X-Y mode?) or an other method to...
Hello Rudi, Most simple method (if there is only *one* HF receiver available): Combine both 10 MHz signals, feed the result to the HF receiver tuned to 10 MHz...
Hello Wolf, Thank you for your quick reply. The "spectrum/spectrogram"; method seems to be the best one in my case; no problem for the delay, if i remember...
Wolf: thanks for the suggestion, i.e. " Try to use 'baseband' frequencies, i.e. frequency ranges *without* the HF VFO offset." Tried same but found that the...
Hi, Having discovered the setup at http://www.ukaranet.org.uk/ I've just started experimenting with using Spectrum Lab as a VLF / SID detector. I've connected...
I am trying to set this parameter to different numbers (like 4, 32, 100), and don't see any difference on the display. Are there any conditions it needs to...
As a new user I'm still experimenting with Spectrum Lab in conjunction with my SID monitor. On the waterfall graph I'm getting the signals I expect at 19.6,...
Hi Mike, I need to check this when time permits. The averaging used to work with the simple amplitude spectrum, but not with the complex spectrum which is now...
I'm using a simple long wire at the moment, as I wanted to see what was possible without spending any money. I think the problem is with the computer (Netbook)...
... Subject: [SpectrumLabUsers] Re: Lines on waterfall plot ... This seems like a noisy PSU. Cheaper to find a quiet one if this one can't be silenced. Alan...
I would do what I do and use a large loop - mine is a 6m length of scart cable with all the cores wired in series, but v24 cable works just as well. That way...
I agree with Alan. Computer PSU's are SMPSU's (switch-mode) and as such are prone to putting out Mains harmonics.... "in-band", which in turn could be picked...
Hello Henry, sorry for my late reply, and thanks for your offer. Things have developed in a different direction here, as I have found a better way of recording...
Dear Wolf, yes, the frequencies seems correct. I verified that was possible to use a sample rate of 2kHz also with SL 2.77b08 and 2.77b10. With some PC was...
I had to roll back to 2.76, it works. 2.77 and 2.78b exhibit the same behavior. Configuration: fresh install of XP+SP3 on Gateway NX570X laptop. Browsers...
Hi Mike, Indeed something seems to have changed after switching to a new compiler. I can recreate the problem here: After accepting a new connection, the HTTP...
