Hi Steve, <<< Basically, yes. In fact the audio signal sampled at 11025 Hz is first multiplied with a two-phase "Local Oscillator" signal, with the frequency set for the center of the display (with c
G'day Wolf, I had a look at the Spectrum Lab manual and see that when you say decimation you don't mean taking smaller records and then averaging (which I understood was decimation). Unfortunately, I
G'day Wolf, I have been trying to understand the information you gave as below:- Using these settings to receive: Sample rate = 11025 Hz FFT type = complex, center frequency = 650 Hz (preferred "AF I
Hi Markus and group, The limit is not yet exceeded, DFCW with 25mHz "shift" is clearly visible. Using these settings to receive: Sample rate = 11025 Hz FFT type = complex, center frequency = 650 Hz (
Hi all, tonight I'd like to try SpecLab's limits in generating extremely slow DFCW: 300 s dashes + 100 s spaces, frequency shift 25 mHz. I'll be on 135922.275 /.300 Hz (if it's free) starting at 21:4