On Thu, Feb 27, 2025 at 10:52 AM, Alejandro Zaragoza wrote:
Where can I get the TinySA ULTRA schematic?
The tinySA Ultra is not an open-source design so its full schematic has not been released to the public.? I believe you have to remove U22 from the circuit instead of just jumping it to verify operation:
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The input switch is U22, type number XA17-G4K.? A sign of a defective switch is when turning on the calibration output, instead of -35dBm, it shows -50dBm or less.
Unsolder U22, install a jumper, and without turning on LNA, everything should work.
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If so, then change the switch.
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Herb
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