jks

@K7JFC Thanks, that's a very good idea. I'll update the docs to indicate the delivered v1.2 software will have audio problems because of the new browser autoplay restrictions.

[update: I have done this]

From the CHANGE_LOG file:

v1.281  April 12, 2019
    Add URL parameter "peak" to set spectrum peak hold mode (overrides last value saved in cookie)
        e.g. "&peak", or redundantly "&peak=1", but more usefully "&peak=0"

    Audio FFT:
        Allow URL parameter "no_wf" to be used in 4 and 3-channel modes, not just 8-channel mode.
            This is useful e.g. if you want to use the audio FFT to study the frequency response of
            the new de-emphasis filter in 20 kHz mode (3-channel mode) where you would otherwise
            never be given the audio FFT because there is no shortage of waterfall channels.
        Added missing window function to FFT.
        Fixed scale/waterfall click frequency in non-IQ modes.

    Added signal generator extension. When enabled replaces ADC input to audio/waterfall DDCs
        with a tunable RF signal source using the same FPGA DDS IP block used by the DDC mixers.

        WARNING: Be careful about drawing conclusions re Kiwi performance and possible bugs
        when using the sig gen. It reveals spurious responses in the waterfall/spectrum to a greater
        degree than if you just tune around with an antenna connected. But without detailed
        experimentation it can be difficult to know where the limitations are. Remember that the
        Kiwi is a carefully balanced compromise to get 4-channel mode to work (i.e. fit in the FPGA
        and have enough Beagle CPU cycles). So the DDSs, mixers, DDCs and FFTs are not perfect.
        Speaking of compromise, when considering FFTs it's important to understand this:
        https://en.wikipedia.org/wiki/Spectral_leakage

Okay, to kiwirecorder.py in https://github.com/jks-prv/kiwiclient I have added an option "--S_meter=S_METER", where S_METER is the number of S-meter averages you want (e.g. 1, 10 etc.) After the averaging it prints a single line with the RSSI value in dBm.

See the Makefile target "s_meter" for an example of how to run it from the command line.

Okay, to kiwirecorder.py in https://github.com/jks-prv/kiwiclient I have added an option "--S_meter=S_METER", where S_METER is the number of S-meter averages you want (e.g. 1, 10 etc.) After the averaging it prints a single line with the RSSI value in dBm.

See the Makefile target "s_meter" for an example of how to run it from the command line.

@Martin: Done.