Hi to all,
some days ago i received my brand new KiwiSDR KIT from a UK official reseller.
After manual assembling, cable setup and software update i put it on test with a magnetic loop antenna (Wellbrook ALA 1530+), head to head with other SDR radios (Elad FDM SW2, SDRplay RS2pro, etc) .
During day time it behaved in a good way, functionally wise is a very interesting device with a lot of potential.
I like a lot the possibility to use four WSPR decoders on four different bands placed without constrictions as well as the possibility to get a prompt snapshot of the whole shortwave spectrum.
But as soon as nightfall hit and street light turned on ... everything went south :-(
My receiving site, like many others, is subject to broadband pulsing noise coming from sodium street light during night time, that mostly affects lower shortwave bands.
Usually this is not a problem for my other SDR radios, programs like HDSDR, SDR#, FDM-SW2, fully defeat this noise cleaning the spectrum, the waterfall and the demodulated audio, with the integrated Noise Blanker functions.
KiwiSDR, right now, does not have NB or NR functions, so i got the tipical buzzing sound, that i was expecting knowing this temporay lack.
What i was not expecting is the fully scratched waterfall screen, the FFT function seems to overreact to this condition fullfilling with several thick & bright horizontal lines, making the function near to useless.
Other SDR programs, in the same conditiom, provide a much better plot even with the noise blanker turned off.
I attached some screens with comparison between KiwiSDR and Elad FDM S2 & HDSDR, operated with same antenna, through a magnetic RF power splitter; the HDSDR "RF NB" function was turned OFF and ON to show its action.
I got same results (but not showed in images) for RSP2 and RTL-SDR with HDSDR and SDR# (with "Baseband Noise Blanker" plugin).
So ... the question is ... there is the hope that a wide band Noise Blanker function, similar to HDSDR "NB RF" or SDR# "Baseband Noise Blanker" will be implemented for KiwiSDR in the near future ?
Is it possible, in the mean time, to modify the behaviour of the waterfall screen to avoid the thick bright lines ?