Hi. I purchased the SeeSii TinySA Ultra+ ZS406 from Amazon last week. I'm really impressed with its design. It is a wonderful piece of hardware. I updated the firmware to the latest version, ran self test and calibration. Everything was fine...
However, when I scanned the radio frequency range from 100 kHz to 5.5 GHz with the supplied antenna, I found some suspicious patterns on the traces and waterfall. It seems that some signals above 2.75 GHz look like copies of the signals from the lower band. Are they spurious signals? Is there any way to fix it? Or is it a problem with my device? Any idea?
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The next two screenshots below were taken during separate scans within 1.8-2.8 GHz and 4.0-5.0 GHz screen ranges:
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The weaker signals around 2.4 GHz are from my router, I think, and the stronger yellow pattern corresponds to the 1.5 minute time interval when the microwave was on.
So it looks like false signals above 2.75 GHz to me. Does anyone have a similar problem?
