Hi, after running satellite obeservations in 402, 437 and 2250 MHz band for some years on HackRF and PlutoSDR I decided to go for a (12 bit) device which can run / grab up to 30 MHz bandwidth over USB 3.0
I have been running the cbass strf tools, with rffft to save the .bin files to SSD with rtlsdr, hackrf, pluto and airspy and now I am trying to get this working with help of rx_sdr tool.
Ubuntu 22.04, LimeSDR Mini is running, I can view 22 MHz wide of signals in either 435 MHz or in S-band without problems.
The script I am trying to use to grab the IQ output and create bin files with also works, meaning, it gives no errors and creates bin files, but if I open those files in rfplot the output does no way look like what I expect to. Start and stop frequency match, continuous carriers show in the plot, but when zooming in I get very low detail / resolution for some reason.
The two lines generating the output:
Start channelizer
nice -20 rffft -i $FIFO -p $WORKINGDIR/data2 -f $FREQ -s $RATE -c 25 -F int -t 10 &
Start rx_samples_to_file
nice -20 rx_sdr -s $RATE -g ‘TIA=0,PGA=0,LNA=30’ -a ‘LNAH’ -d ‘driver=lime’ -F CS16 -f $FREQ $FIFO -p 0 &
Is there another tool know to feed my FIFO with the data from the LimeSDR Mini 2.0 which I can try ?
As example the UHF band in my rffft output zoomed in but totally showing no detail on for example ISM band
and a screenshot of S-band with rffft from a Pluto SDR
thanks,
Ben