Well, I didn’t plug the TinySA into anything directly (it never touched a live circuit or an RF output) – however, the only thing I can surmise is that the signal coming from the receiver’s RF oscillator and through the external whip antenna might have been too much for the TinySA.? It’s not a situation where I would have thought an attenuator would have been necessary, but nevertheless I have to admit fault where fault is due – an attenuator was not used.? I’ve ordered another TinySA, and will use the current one as a signal generator.? Eventually, I wanted two of these, anyway.?

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So, a question for you Erik.? Other than failing the attenuator self-test, the TinySA is calibrating, receiving signals, and otherwise seems to be working.? With the “Attenuator Fail” happening, what operations with the TinySA will no longer function correctly going forward?? It looks like I can still use it for some things.

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Steve, KW4H

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Any external attenuator (even only 10dB) will help protect the tinySA
Many SA users (small and big SA's) always keep an external attenuator attached.