Hi Jim
The 800MHz versions of the firmware are the ones that avoid glitches at 300
and/or 600MHz.
The design seems to be based on pushing chips beyind spec and using
harmonics of the oscillator signal for higher frequencies - I assume the
changeover points are 300 & 600 MHz with the 900 MHz builds.
Mike
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On Tue, 6 Aug 2019, 22:14 , <jimcking@...> wrote:
Yes, I did reload firmware with nanoVNA_900ch_20190722.dfu
Forgot to mention that earlier. The above firmware did help on one I got
earlier with a lot lower spike but did not help much on this one.
Thanks for the help though.
Jim K.
