I'm using the most recent kiwiclient repository and trying to get the snr for my kiwisdr. to quote the readme:

"launch this program with no filename and just the SNR will be computed, with a filename, the raw waterfall data is saved. Launch with --help to list all options"

with or without a server and port, I get the following. I'm obviously missing something....

ejj3@ejj3-Mingus:~/kiwiclient$ python3 ./microkiwi_waterfall.py -s -p 8073 --help

 File "./microkiwi_waterfall.py", line 45

  print "KiwiSDR Server: %s:%d" % (host,port)


SyntaxError: invalid syntax


using a command like

python3 kiwirecorder.py -s -p 8073 -f 15770 -m am --s-meter=0

works as expected.

Thanks in advance.


  • edited July 2022

    Hi Eric,

    Turns out that microkiwi_waterfall.py has been last updated 3 years ago and is still a Python2 script. If you can run it that way it will print the average snr for the zoom level you selected. You could make a time plot of that e.g. when experimenting with antennas.

    bregards Ben

  • jksjks
    edited July 2022

    I got microkiwi_waterfall.py running again under Python 3. Update from my repo: https://github.com/jks-prv/kiwiclient

    Also consider using the --wf option to kiwirecorder.py for something similar. See the example invocation in the Makefile (target wf:)

  • edited July 2022

    Thanks, Ben and JKS.

    While I was about to try converting the print statements, I see that jks has done it. This is great, since I don't 'do' python. I gave that version a try, and it works, and will experiment with kiwirecorder.py. My goal is, indeed, to monitor signal to noise across time and frequencies to monitor some setup experiments.

    Very much appreciated.


  • Hi,

    I wrote that script, but it's never been updated and I don't even remember what it did...

    I'm just sure that it was written BADLY. Please avoid it, use it just for "inspiration" :-)


  • edited July 2022

    Hi Marco,

    Indeed your earlier work on showing these snr's on a map interface for 4 bands inspired me to create something similar plotting this information for 20 selected Kiwis in 4 longitude bands. Although I started out with using microkiwi waterfall I switched to just collecting the less intrusive self reported hourly snr's when these became available.

    Example results : http://www.sparks.epizy.com/SNR/Latest_MultiSNR_WW2.html?i=2

    On a shorter time frame, I still use a modified version of microkiwi_waterfall, but since the method uses a rather large chunk of the HF spectrum, it would be great to have a measure of SNR in the demodulated bandwidth. The forum discussion in March "SNR meter vs S-meter" refers to that.

    73 Ben

Sign In or Register to comment.